Set oven to 400 Place whole potato in over or microwave it so that it is easier to cut. Once potato is at a good cutting firmness cut potato into rounds. Spray a baking sheet with olive oil and place potatoes on sheet. Spray potatoes again with a little bit of olive oil and add pepper and onion powder. Place in oven for 12 min then flip and cook another 12. If they are not browned enough to your liking broil them for about 5 minutes!