Preheat air fryer to 390°F.
Place cauliflower florets into a large bowl. Add olive oil, garlic powder, Italian seasoning, salt, and pepper.
Stir to coat, making sure each piece is covered. Spread cauliflower in an even, single layer in air fryer basket.
Air fry for 7 minutes; remove basket and shake. Then top cauliflower with shredded cheeses.
Continue to air fry for an additional 3-5 minutes, or until cheese is melted and cauliflower is cooked through. Serve immediately.