Preheat the air fryer to 375 F according to manufacturer instructions. (Mine was 375F for 5 minutes)
Wash, scrub and dry the potatoes.
Cut them in half, leave the skins on.
In a large bowl season the potatoes with garlic, onion powder and salt, pepper and drizzle with oil.
Spray the air fryer basket lightly with cooking oil before adding the potatoes. (not non-stick spray – see notes in post)
Air fry the seasoned potatoes at 375 F for 15 minutes, turning the potatoes half way through. Within the last 5 minutes pause the air fryer and add the parmesan cheese to each potato. Continue to air fry.
Add more parmesan cheese and fresh herbs (parsley and thyme work the best!) on top before serving.