Thermal mass is your friend. You need something that can hold a lot of heat, is flat, food safe, heatproof, textured and porous.

Preheat for an hour and drop the pizza on it. Also turn the infrared broiler. Or blowtorch. Thin crust also helps.

Edit: If you can think of way to make the topping stay in place(impossible) , the perfect way to bake a pizza is tandoor. Good pizza is rich flatbread and not casserole on a dough. Which from my observations is the biggest error people make.