No. If you don’t have a pizza stone, but want to create a sizzling hot surface to get a nice crispy pizza crust, you can place an inverted rimmed baking sheet in the oven and let it heat up as you preheat the oven. Just be sure to prepare your pizza on a piece of parchment and unrimmed baking sheet or pizza peel so you can slide it on and off of the hot baking sheet.