Preheat air fryer to 165 F for 5 minutes. Spray air fryer basket with non stick spray. Put breasts inside without overlapping. Sprinkle salt and pepper on top.
Set to 360 degrees F for 12-14 minutes, flipping around minute 6 or until internal temperature reaches 165 F in thickest part. (timing will vary, very small may be closer to 10 minutes where very large may take a few minutes past 14 minutes.)
Brush bbq sauce on top and continue cooking for an additional 1-2 minutes. Allow to rest 5 minutes and then slice.