If using wooden skewers, soak them in water for at least 20 minutes before they go in the oven.
Preheat oven to 350 degrees.
Skewer potatoes and use a knife to spiral cut them by holding the knife at an angle and rotating the potato to make spiral slices {but not cutting all the way through}.
Gently stretch the slices along the skewer.
Brush potatoes all over with oil then cover with seasoning.
Place on a lined baking sheet.
Bake for 45 minutes, flipping over half way through.
Serve warm with ketchup or sour cream for dipping.
Notes
You can use any potato but I found small/med potatoes like Yukon Gold and Red are easier to cut and spiral. Large baker potatoes were much harder to skewer and cut thin before baking. Also if you use a larger potato adjust your cooking time accordingly.