This recipe is for fresh broccoli, not frozen. Try to keep the broccoli cuts to be the same size for even cooking. The broccoli will cook down and shrink, so if it the basket feels full at first, there will be half the amount after it shrinks.
Coat the broccoli with oil. Season broccoli with garlic powder, salt and pepper. Add the broccoli to the air fryer basket or rack.
Air Fry 380°F for 10-15 minutes, flipping and shaking 3 times through cooking. This will ensure that the broccoli cooks evenly. Cooking times will vary depending on the size of your broccoli and size/power of your air fryer. Start on the lower cooking time first (about 10 minutes) and if you like your broccoli more crispy, add additional time.