01 - Insert a long wooden or metal skewer through the center of each potato lengthwise.
02 - Using a sharp knife, cut each potato in a spiral while rotating it, slicing from one end to the other. Stretch the potato gently along the skewer to create evenly spaced spirals.
03 - Combine olive oil, garlic powder, smoked paprika, salt, and black pepper in a small bowl.
04 - Brush or rub the prepared seasoning mixture thoroughly over each spiraled potato, ensuring seasoning reaches between all layers.
05 - Preheat air fryer to 375°F (190°C) for 3 minutes.
06 - Place the skewered potatoes in the air fryer basket, ensuring they do not touch.
07 - Air-fry the potatoes for 20 to 25 minutes, rotating halfway through, until crisp and golden brown.
08 - Sprinkle with Parmesan, fresh parsley, and chili flakes, if desired, before serving.