Why do your frozen pizzas keep curling up?

Frozen pizzas may curl up during baking due to uneven heating or a high moisture content in the crust. If the oven temperature is too high, the edges can cook faster than the center, causing them to lift. Additionally, using a Pizza stone can help maintain an even temperature, preventing excessive curling. To minimize this, ensure the oven is preheated properly and consider using a baking sheet for more even heat distribution.