01 -  Insert a long wooden or metal skewer lengthwise through the center of each potato. 
 02 -  Secure the skewer and, using a sharp knife, carefully slice the potato in a spiral motion from end to end while rotating it; gently stretch each spiral along the skewer for even spacing. 
 03 -  In a small bowl, blend olive oil, garlic powder, smoked paprika, salt, and black pepper until uniform. 
 04 -  Brush or rub the seasoning mixture evenly over the surface and between the layers of the spiraled potatoes. 
 05 -  Preheat the air fryer to 375°F for 3 minutes. 
 06 -  Place the prepared, skewered potatoes in the air fryer basket in a single layer, ensuring they do not touch. 
 07 -  Cook the potatoes at 375°F for 20 to 25 minutes, turning halfway through, until golden brown and crispy. 
 08 -  Optional: Immediately after cooking, sprinkle with grated Parmesan cheese, fresh parsley, and chili flakes before serving.