Marinate the Chicken:
In a large bowl, whisk together the buttermilk and egg. Add the chicken pieces and ensure they are fully submerged. Cover and refrigerate for at least 1 hour, or overnight for maximum tenderness.
Prepare the Coating:
In another bowl, mix the flour, panko breadcrumbs, smoked paprika, garlic powder, onion powder, salt, black pepper, and cayenne pepper (if using).
Coat the Chicken:
Remove the chicken from the buttermilk, letting the excess drip off. Dredge each piece in the flour mixture, pressing gently to ensure a thick, even coating.
Preheat the Air Fryer:
Preheat your air fryer to 375°F (190°C) for 5 minutes.
Air Fry the Chicken:
Lightly spray the air fryer basket with olive oil. Arrange the coated chicken pieces in a single layer, ensuring they don’t overlap. Spray the tops with olive oil.
Cook at 375°F (190°C) for 25–30 minutes, flipping the chicken halfway through. Ensure the internal temperature of the chicken reaches 165°F (74°C).
Serve and Enjoy:
Remove the chicken from the air fryer and let it rest for 5 minutes before serving. Serve hot with your favorite sides or dipping sauces!