Start preheating air fryer (if yours has this feature).
Rub broccoli florets with oil and then sprinkle garlic powder, salt and pepper on top. Rub seasoning in to coat evenly.
Place broccoli in air fryer basket and set temperature to 400° F (205° C) for 7 minutes.
Half way through cook time, after about 4 minutes, remove the air fryer basket and shake the broccoli around. Replace basket and let broccoli finish cooking.
Remove broccoli from air fryer. If it isn't crispy enough, cook for an additional minute or two (exact time depends on your air fryer model and floret size). Serve cooked broccoli immediately since it looses crispiness quickly. Enjoy!