Preheat your air fryer to 415°F (213°C).
Prepare the chicken by slicing each chicken breast horizontally into thin, flat cutlets. Pat dry with paper towels if needed.
In a small bowl, combine paprika, smoked paprika, garlic powder, onion powder, salt, brown sugar, and cornstarch.
Place the chicken in a mixing bowl. Sprinkle the seasoning mixture evenly over the chicken.
Add the avocado oil and toss until every piece is thoroughly coated.
Arrange the chicken in a single layer in the air fryer basket, leaving space between pieces for proper airflow.
Cook the Air Fryer Chicken Breast for 10 minutes. Larger pieces may require 12–13 minutes.
Check that the internal temperature reaches 165°F (74°C).
Remove from the air fryer and let the chicken rest for 3–5 minutes before serving.
Slice and enjoy warm with your favorite dipping sauce or side dishes.