Preheat the air fryer to 400º F.
Clean and dry the potatoes with a towel. Drizzle a little olive oil all over the skin, then sprinkle some kosher salt on top.
Place in the air fryer basket and cook for 30 to 40 minutes, or until they reach an internal temperature of 205º F. It might take longer depending on the size of the potato, your specific air fryer and how many potatoes you are cooking.
Use a fork to slice and open the potato right before adding your favorite toppings and enjoying.