Slice the chicken breasts into thin, flat pieces rather than bite-sized chunks; pat any excess moisture dry.
Combine the paprika, smoked paprika, garlic powder, onion powder, salt, and brown sugar and evenly sprinkle the mixture over the chicken pieces in a bowl.
Add the avocado oil and toss well to fully coat each piece with the seasoning.
Preheat your air fryer to 415 degrees Fahrenheit.
Place the seasoned chicken in a single layer in the air fryer basket, allowing space for air flow.
Cook the chicken for 10 minutes, checking thickness; if pieces are larger, cook closer to 13 minutes until the internal temperature reaches 165 degrees.
Remove the chicken and let it rest briefly before slicing and serving hot and juicy.