Wash and dry the potatoes thoroughly. Scrub them under cool running water to remove any dirt, then pat completely dry with paper towels—this is essential for achieving crispy skin.
Pierce each potato several times with a fork or skewer. This allows steam to escape during cooking and prevents your potatoes from potentially exploding in the air fryer.
Rub the potatoes with oil using your hands or a pastry brush, ensuring each potato is evenly but lightly coated on all sides. The oil helps the skin crisp up beautifully.
Season the potatoes generously with kosher salt, pressing it gently into the skin. Add pepper and garlic powder if using. The salt creates that delicious, crave-worthy salty crust.
Preheat your air fryer to 400°F (200°C) for about 2 minutes if your model requires preheating.
Place the potatoes in the air fryer basket, allowing a little space between them for air circulation. Don’t overcrowd the basket—cook in batches if necessary.
Cook for 25-30 minutes until the skin is crisp and the interior is tender. The exact time will depend on the size of your potatoes and your air fryer model. A skewer should easily slide through to the center when done.
Check the potatoes at the 20-minute mark by carefully squeezing them with tongs (they’ll be hot!). If they yield slightly to pressure, they’re almost done.
Once cooked, remove the potatoes carefully from the air fryer and let them rest for 2-3 minutes. This allows the interior to finish steaming and become perfectly fluffy.
Slice each potato open lengthwise and fluff the interior with a fork before adding your favorite toppings. Serve immediately while hot and crispy.