Begin by scrubbing the russet potatoes thoroughly under running water to remove any dirt. Once clean, dry them completely with a kitchen towel to achieve crispy skin. Preheat your air fryer to 400°F (200°C).

Drizzle a generous amount of olive oil over each potato, rubbing it evenly across the skin for a crispy texture. Sprinkle kosher salt and black pepper over the potatoes.

Place the seasoned potatoes into the air fryer basket in a single layer, ensuring space for air circulation. Set the air fryer temperature to 400°F (200°C).

Pierce the thickest part of each potato with a fork several times to release steam. Air fry the potatoes for 35-45 minutes, checking for doneness after 35 minutes.

Carefully remove the cooked potatoes from the basket using tongs. Slice open each potato down the center and fluff the insides with a fork.