Place a generous layer of Quest chips in the bottom of a silicone liner or other air fryer safe dish.
Top the chips with a generous amount of shredded cheese. Air fry at 350F for 5 minutes or until the cheese is melted and the chips are toasted.
While the air fryer nachos are cooking, dice up the onion, tomato, jalapeno, and avocado.
Plate the cheese-covered tortilla chips and garnish with the diced vegetables. Add a dollop of sour cream and a squeeze of lime juice. Sprinkle with cilantro and enjoy.