Prep the potatoes: Scrub and dry the potatoes. Halve or quarter baby potatoes so they’re about 1-inch pieces. If using russets, peel if you like, then cut into 1-inch cubes.
Preheat the air fryer: Set to 400°F (200°C) for 3–5 minutes. A hot basket helps create a crisp exterior.
Season: In a large bowl, toss potatoes with olive oil, minced garlic (or garlic powder), salt, pepper, Italian seasoning, and smoked paprika. Mix until evenly coated.
Add Parmesan: Sprinkle in the grated Parmesan and toss again. The cheese should cling to the oiled potatoes.
Arrange in basket: Place potatoes in a single layer in the air fryer basket. A little overlap is fine, but avoid crowding for best crisping. Cook in batches if needed.
Air fry: Cook at 400°F (200°C) for 10 minutes. Shake the basket or stir, then cook another 6–10 minutes, until potatoes are deep golden and fork-tender.
Finish and garnish: Transfer to a bowl. Taste and adjust salt. Sprinkle with extra Parmesan and chopped parsley. Add a squeeze of lemon if you like a bright finish.
Serve hot: Enjoy immediately while the edges are crisp.