Wash the potatoes thoroughly under cold running water to remove any dirt. Pat them dry with a towel.
Prick each potato several times with a fork to allow steam to escape during cooking.
Brush each potato with olive oil, ensuring they are coated evenly.
Sprinkle sea salt, black pepper, and garlic powder over the potatoes, rubbing it in to enhance flavor.
Preheat the air fryer to 400°F (200°C) for about 5 minutes.
Place the prepared potatoes into the air fryer basket, ensuring they are not overcrowded.
Cook the potatoes at 400°F (200°C) for about 35-40 minutes, turning them halfway through for even crispiness.
Check if the potatoes are done by inserting a fork or skewer into the center; it should glide in easily without resistance.
Once cooked, carefully remove the potatoes from the basket using tongs and let them rest for a few minutes before serving.