In a small pot or bowl, combine the 'seasoning mix'.
In a large mixing bowl, whisk together the buttermilk, egg, garlic and ginger with 1 tbsp of the seasoning mix. Once everything is well-blended, toss in the chicken, then tightly cover in the fridge and leave to marinate. 4+ hours is best (up to 24 hours) with 2 hours being the minimum. Take out of the fridge 30 minutes before needed to take the chill off the chicken.
In a large shallow dish, combine the flour, baking powder and remaining seasoning. One by one, take a chicken tender straight out of the bowl and place it in the flour. Use your hands to thoroughly coat the chicken. Really press the flour into every crack and crevice to create lots of tiny flaky bits. Give it a shake, then place to one side and repeat.
Heat up the oil in a suitably-sized cast-iron or heavy-based pot over medium/medium-high heat until it reaches 175C/350F. Working in batches, carefully lower the tenders into the hot oil and leave for a few minutes to allow the batter to cling to the meat (separate with tongs if they immediately stick to each other). The temp will drop slightly to around 320F/160C, just try and maintain it as best you can. Flip the tenders and continue frying for another few mins until deep golden and visibly crispy. Remove and place on a wire rack with a tray underneath to catch excess oil (I like an extra pinch of salt as they rest).
For the wraps, start by combining the mayonnaise and tikka paste to make the tikka mayo. Spread a good dollop of mango chutney through the centre of the wraps, then top with lettuce, cucumber and red onion. Add two tenders per wrap (they should be pretty big), then drizzle with the tikka mayo. Tightly wrap/roll, then tuck in and enjoy!