Scrub and wash the sweet potato. Slice the sweet potato (with the skin on) to 1/4-inch thickness into fries.
Lightly spray the fries with avocado oil spray. Avocado oil is recommended for temperatures about 350 F.
Sprinkle with garlic powder, salt, pepper and toss to combine. Add the sweet potato fries to the air fryer basket.
Heat the airfryer to 400 F. Note - some air fryers require preheating, mine does not. Cook 7 minutes then toss the basket and cook another 6-7 minutes.