
Break or cut off the ends of the asparagus. (This should be about 1 ½ - inches off of the bottom.)
Place the asparagus in the basket of an air fryer. Drizzle all over with the olive oil and sprinkle with salt and pepper. Shake the basket to coat the asparagus in the seasonings.
Air fry at 400°F for 6 minutes. Stop and shake the basket to move the asparagus around. Cook for another 4 to 6 minutes, until crisp yet tender.
Sprinkle with parmesan cheese and serve with lemon wedges for squeezing over top, if desired.