Prepare the Bang Bang Sauce
In a small bowl, whisk together mayonnaise, Thai sweet chili sauce, Sriracha, and honey until smooth.
Set aside to use as a dipping sauce or to coat the chicken.
Marinate the Chicken
In a medium bowl, combine buttermilk, flour, cornstarch, egg, Sriracha, garlic powder, salt, black pepper, and cayenne pepper.
Add chicken tenderloins and toss to coat thoroughly. Marinate in the refrigerator for at least 15 minutes.
Bread the Chicken
Place Panko breadcrumbs on a shallow plate.
Remove each piece of chicken from the marinade, allowing excess to drip off.
Dredge the chicken in Panko breadcrumbs, pressing gently to adhere. Repeat for all pieces.
Air Fry the Chicken
Preheat the air fryer to 375°F (190°C).
Lightly spray the air fryer basket with canola oil.
Arrange breaded chicken in a single layer, ensuring pieces do not touch.
Spray the tops of the chicken with a light coating of oil for extra crispiness.
Air fry for 10–12 minutes, flipping halfway, until golden brown and the internal temperature reaches 165°F (74°C).
Coat with Bang Bang Sauce
Transfer cooked chicken to a large bowl.
Drizzle Bang Bang Sauce over the chicken and toss gently to coat.
Garnish and Serve
Arrange chicken on a serving plate, garnish with chopped parsley, and serve warm with extra sauce on the side.