Make these easy Sheet Pan Chicken Fajitas for a fuss-free weeknight dinner. Everything cooks on one pan for maximum flavour and minimal washing up!

And let me tell you, these are not just any regular sheet pan fajitas. I’ve got a few secrets that I’m going to share with you that’ll change the way you make fajitas forever. Okay, slightly dramatic, but dang, this method is awesome for a weeknight! Follow me…

close up shot of sheet pan chicken fajitas fresh out the oven

Chicken Fajita Ingredients

These fajitas are proof that you only need a simple selection of store-bought ingredients to make an incredible dinner. The full ingredient list is in the recipe card, but just to quickly go over what we’re using and why:

  • Chicken – the key to this recipe being so delicious is the use of boneless skinless chicken thighs. They’re much more flavoursome than breast and are far more difficult to overcook, meaning they come out much juicier and tender too.
  • Spices – I used a homemade fajita blend, but you could use store-bought if you’d prefer.
  • Lime and Oil – these will be combined with the seasoning to create the marinade (more on this in a sec).
  • Peppers and Onion – classic additions to fajitas. Both will be sliced.
  • Tortillas – any sort of soft flour tortillas will do the trick.
overhead shot of sheet pan chicken fajitas ingredients with text labels
Can I use Chicken Breast?

Absolutely! Whilst I prefer using chicken thighs because they stay nice and juicy, chicken breast works just fine too (more in the recipe card notes below).

Chicken Fajita Marinade

The marinade itself is incredibly simple. Don’t worry about time either; if I’m in a rush, I usually just coat the chicken in the marinade and leave it at room temp whilst I prepare the veg (or as long as I have time for). Although, preferably if you have time, I would marinate for a longer in the fridge.

Here is the ‘formula’ I use for a chicken fajita marinade:

3 parts Olive Oil | 3 parts Fajita Seasoning | 2 parts Lime Juice

For this recipe that translates to tbsps.

4 step by step photos showing how to prepare sheet pan fajitas

Sheet Pan Chicken Fajitas

Okay, so typically yes, you would bake sheet pan fajitas. However, I like to use the grill/broiler. I do this so you can develop that same beautiful char you get on the chicken in traditional fajitas. I find with baking, everything kind of shrivels up by the time it gets any sort of colour.

When it comes to the sheet pan itself, you need to make sure you’re using a big one (yes, that huge one in the house you never use). This is to prevent everything from steaming.

Process shots: add peppers, onion and leftover marinade to tray (photo 1), mix (photo 2), add chicken (photo 3), grill/broil (photo 4).

4 step by step photos showing how to make sheet pan fajitas
sheet pan chicken fajitas  on large tray fresh out the oven

Recipe Tip

Don’t waste the pan juices! That’s gorgeous flavour just waiting to be drizzled over the fajitas at the end.

Chicken Fajitas Serving Suggestions

When the chicken is done, let it rest on a chopping board for at least 5 mins. This will not only allow it to finish cooking through the centre, but also give it the opportunity to soak back up some juices.

From there, slice your chicken at an angle and against the natural grain of the chicken (for maximum tenderness). I usually put the chicken/veg in a large bowl with the fillings/tortillas around the table so people can help themselves.

When it comes to the fajita toppings, I recommend any of the following:

Chicken Fajita Toppings

  • Guac
  • Salsa
  • Sour Cream
  • Coriander/Cilantro
  • Lime Juice
  • Cheese

If you want a little something on the side, check out my Nachos (or Tortilla Chips) or Wedges (or Spicy Potatoes).

Alrighty, let’s tuck into the full recipe for these sheet pan fajitas shall we?!

Flat lay of chicken fajitas with sides and garnish including sour cream and guac

How to make Sheet Pan Chicken Fajitas (Full Recipe & Video)

Flat lay of chicken fajitas with sides and garnish including sour cream and guac
5 from 6 votes

Sheet Pan Chicken Fajitas

Make these easy Sheet Pan Chicken Fajitas for a fuss-free weeknight dinner. Everything cooks on one pan for maximum flavour and minimal washing up!
Prep: 10 minutes
Cook: 20 minutes
Total: 30 minutes
Servings: 4
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Equipment

  • Small Bowl (for marinade)
  • Sharp Knife & Chopping Board
  • Very Large Sheet Pan/Oven Tray (mine is 30cm x 45cm / 12” x 18”)
  • Large Mixing Bowl with Cling Film (or Zip Lock Bag)

Ingredients 

Marinade

  • 3 tbsp Olive Oil
  • 3 tbsp Fajita Seasoning (see notes)
  • 1 Lime, juice only

Fajitas

  • 6 Boneless Skinless Chicken Thighs (~1.4lb/640g)
  • 3 Peppers/Capsicums, sliced
  • 1 medium Red Onion, sliced
  • 8-10 small Tortilla Wraps, warmed

Topping Ideas

  • Guac (or smashed/sliced avocado)
  • Sour Cream
  • Cheese
  • Jalapeños
  • Salsa
  • Coriander/Cilantro

Instructions 

  • In a small bowl, mix 3 tbsp fajita seasoning, 3 tbsp olive oil and the juice of 1 lime. Reserve 1 tbsp of the marinade, then mix the remaining with 6 boneless skinless chicken thighs in a large bowl (or zip lock bag). Leave to marinate in the fridge (up to overnight) for the best results. Alternatively, you can rest at room temp for up to 30 minutes and just marinate as you prep the veg (still delicious!)
  • Preheat the grill/broiler to high.
  • On a very large baking tray, combine 1 large sliced red onion and 3 sliced peppers with the 1 tbsp of marinade. Create 6 spaces for your chicken, then place them in there.
  • Place the tray about 6” underneath the broiler/grill. Cook for 10mins or until the chicken begins to char, then take out, flip the chicken and veg and place back underneath for another 8mins, or until the chicken begins to char on the other side and is cooked through the centre. Timings will vary, so just be vigilant and cook longer if needed. If the chicken chars too quickly, place the tray lower or turn down the heat. The black charred bits add authentic flavour.
  • Place the chicken on a chopping board to rest for at least 5 mins to soak back up the juices. Slice into strips then stack your fajitas, not forgetting to pour some of those gorgeous pan juices over the end!

Video

Notes

a) Fajita Seasoning – Be sure to check out my homemade fajita seasoning! You could sub a packet of store-bought seasoning, I recommend just topping up with some salt and pepper if you need to.
b) Cooking Timings – Total time will vary, so just be vigilant. Although it’s unlikely, if the chicken chars too quickly, then simply turn down the heat or lower the rack. Also, the chicken will carry on cooking as it rests, so you want it only just cooked after broiling. Thighs are very forgiving though, so don’t be afraid to cook them longer to get some char. For reference, the safe internal temp of chicken needs to reach 165F/74C.
c) Can I use Chicken Breast? – You can yes, but it’s leaner, so you’ll have to be careful not to overcook. Here’s what I recommend doing:
  • Use the same weight of chicken
  • Cut into thick strips.
  • Keep the same distance from the broiler.
  • Flip halfway as normal.
  • Start checking after about 10-12 minutes.
  • Remove and continue broiling the veg if needed.
You might lose out on that authentic char, but it will still work just fine!
d) Troubleshooting – Make sure you’ve got a nice big tray so everything has room to breathe; otherwise it will steam. If you end up with a lot of liquid in the pan which is preventing everything from browning, just pour it into a bowl then place everything back under the grill. If you find the chicken is cooked before the veg, just remove it and place the veg back under to brown. 
e) Calories – Based per serving (whole recipe divided by 4), assuming all the marinade is used (i.e pouring the pan juices over), 8 fajitas are made and without any toppings.

Nutrition

Serving: 1fajita | Calories: 527kcal | Carbohydrates: 44.39g | Protein: 38.64g | Fat: 20.85g | Saturated Fat: 4.06g | Polyunsaturated Fat: 3.5g | Monounsaturated Fat: 11.302g | Trans Fat: 0.005g | Cholesterol: 128mg | Sodium: 1027mg | Potassium: 819mg | Fiber: 3.7g | Sugar: 2.98g | Vitamin A: 640IU | Vitamin C: 264.4mg | Calcium: 113mg | Iron: 4.79mg

Looking for more?

You’ll find plenty more delicious comfort food like this in my Debut Cookbook ‘Comfy’


If you’re looking for another chicken fajita recipe then check out my Chicken Fajita Nachos! Also, check out these similar recipes:

Easy Tex Mex Recipes

One Pan/Tray Chicken Dinners


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Recipe Rating




12 Comments

  1. Shana says:

    5 stars
    This was absolutely delicious! My very picker eater ate an entire fajita! Definitely putting into my dinner rotation.

    1. Chris says:

      That’s so awesome to hear! Thanks for coming back and letting me know 🙂

  2. Rosa says:

    5 stars
    This looks so simple to make and sounds so delicious! My mouth is watering!!

    1. Chris says:

      So simple! 🙂

  3. kim says:

    5 stars
    What an amazing dinner! Love all of the flavors and how easy it is!

    1. Chris says:

      Thanks Kim 🙂

  4. Demeter says:

    5 stars
    Fantastic dinner and less clean up? Sounds like an absolute winner to me!

    1. Chris says:

      Ohhhh yes! 🙂

  5. Alexandra says:

    5 stars
    I love a good sheet pan dish and this is no exception. Such lovely flavours!

    1. Chris says:

      Sheet pan dinners ftw!!

  6. Danielle Wolter says:

    5 stars
    i am totally with you on the thighs. they are so much juicier and more flavorful than breasts. I always use them. Loving the homemade fajita marinade marinade too. sounds incredible!

    1. Chris says:

      Yay for team chicken thigh! Thanks Danielle 🙂