Marinate the chicken by combining buttermilk and hot sauce in a large bowl. Add chicken breasts, ensuring they’re fully submerged, and refrigerate for at least 1 hour (overnight works even better for maximum tenderness).
Prepare your breading station with three separate bowls: one with flour mixed with all the dry spices, one with beaten eggs, and another with the remaining seasoned flour.
Preheat your air fryer to 375°F (190°C) for about 3 minutes. This ensures even cooking from the start.
Remove chicken from buttermilk and let excess drip off. Don’t rinse the marinade – it helps the breading stick!
Dredge each piece first in seasoned flour, then dip in beaten egg, and finally coat thoroughly in the second bowl of seasoned flour, pressing gently to ensure the coating adheres.
Spray the air fryer basket with oil spray, then place chicken pieces inside, making sure they don’t touch or overlap. Spray the tops lightly with oil spray.
Cook for 10 minutes at 375°F, then carefully flip the chicken, spray lightly again, and cook for another 7-10 minutes until golden brown and internal temperature reaches 165°F.
While chicken cooks, prepare the buns by lightly toasting them either in a toaster or in the air fryer for 1-2 minutes.
Mix mayonnaise with sriracha (if using) and spread on both sides of toasted buns.
Assemble your sandwiches with the crispy chicken, pickles, lettuce, and tomato (if using). Serve immediately while hot and crispy!