Start by washing and peeling the russet potatoes, if desired. Cut them into ¼ inch sticks to ensure even cooking. Rinse the potato sticks in cold water to remove excess starch. Once rinsed, pat them dry thoroughly with a clean kitchen towel.

In a large mixing bowl, toss the dried potato sticks with olive oil until they are evenly coated. Sprinkle in garlic powder, salt, and black pepper, mixing well.

Preheat your air fryer to 375°F (190°C) for about 5 minutes.

Once preheated, carefully place the seasoned fries in a single layer in the air fryer basket. Cook the fries for 15-18 minutes, shaking the basket halfway through.

After cooking, transfer the hot, crispy fries to a serving bowl. Immediately sprinkle freshly grated parmesan cheese over the top, allowing it to melt slightly.