Pre-heat the oven to 275 degrees F. Place an oven-safe roasting rack over a roasting tray or baking sheet. If you don’t have a rack then just coat the sheet tray with a little oil. Using a mandolin or a really sharp knife, carefully slice the potato into very thin slices (1/8 of an inch thick).

Place the potato slices into a bowl and cover with the olive oil. Using your hands, massage the oil onto the slices until evenly coated. Lay the slices of potato in a single layer on the rack. Sprinkle with salt and pepper. Bake the chips for about 50-60 minutes. Rotate the tray halfway through baking and turn the chips over so they cook evenly on both sides. Bake until the chips are golden brown. They will crisp up as they cool. Serve the chips plain or with your favorite dip.