Cut each chicken breast into 3-4 thin, flat pieces from a one-pound package. Pat them dry if they have a lot of moisture.
In a bowl, thoroughly toss the paprika, smoked paprika, garlic powder, onion powder, salt, brown sugar, and cornstarch together until well mixed.
Add the avocado oil to the chicken and spice mixture, then toss thoroughly to coat all the chicken pieces using your hands or tongs.
Preheat your air fryer to 415 degrees F.
Place the seasoned chicken in a single layer on the air fryer basket or grate, ensuring a bit of space for air to circulate around each piece.
Air fry for 10-13 minutes, or until the internal temperature reaches 165 degrees F.
Remove from air fryer, let it rest for 2 minutes, then slice and enjoy its crispy outside and juicy inside.