Frozen fish in air fryer is the way to go! Flaky tender meat inside with perfect crispiness to the outside. Lemon pepper tilapia or salmon done perfectly.
Spray air fryer basket with non stick spray and lay frozen fillets inside, do not overlap them.
Cut lemon in half, lightly squeeze some of one half on to fish and then sprinkle with seasonings. (if you are only doing 2 at a time then only add half of seasonings to top of first batch)
Slice other half of lemon and put a thin slice of fresh lemon on each fillet.
Close basket and set to 390 degrees for 12 minutes, then check. Timing will vary depending on how thick each piece is and how "done" you like your fish to be. Add 2 minutes at a time and check again if you want them to have more time.