Begin by peeling and slicing the potatoes, “scallop style”, in thin discs. Place on lined baking sheet and drizzle with olive oil, sprinkle with salt, pepper, garlic powder, onion powder, paprika and dried oregano. Bake at 350 degrees for 20 minutes. DO NOT cook completely as they will continue to cook once they are on the pizza. Once your potatoes are done and out of the oven, raise the temperature to 400 degrees.