Yes, you can heat tortilla chips in the air fryer. The best way to do this is preheat the Air Fryer to 400º once preheated cook for 2–3 minutes at most. You don't need to worry about over crowding the Air Fryer since these are already cooked. You can place a a bunch in the basket. Depending on the way your Air Fryer heats will depend on if you need less time to cook them.