01 - Set the air fryer to 380°F (193°C) and preheat for 3 minutes.
02 - Rinse potato sticks in cold water to remove excess starch. Drain and pat completely dry with paper towels.
03 - In a large bowl, toss the potato sticks with olive oil, sea salt, and black pepper if using, ensuring even coating.
04 - Place fries in a single layer in the air fryer basket. Cook in batches if necessary to avoid overcrowding.
05 - Cook fries for 18 to 22 minutes, shaking the basket halfway through, until golden and crisp.
06 - Transfer fries immediately to a serving bowl and sprinkle with additional sea salt to taste. Serve hot.