Remove the slotted air fryer basket, leaving the bottom tray in place, and preheat the air fryer to 390F.
Score the inside of the potatoes with a pairing knife. Add the melted butter to the base of the air fryer with 4 tbsp of parmesan cheese, paprika, garlic, salt, and pepper.
Place the potatoes, cut side down in the air fryer basket and use a silicone brush to coat the tops with the melted butter mixture. Sprinkle 2-3 tbsp of parmesan cheese on top and air fry for 20 minutes.
Flip the potatoes over, top with the remaining parmesan and half the fresh parsley. Continue air frying for 10 more minutes. Garnish with more fresh parsley and serve.