If it is only a few pieces, use a covered teflon skillet and the range top. Flip the warmness on low, put within the pizza, put on the lid, and it'll heat slowly, crisping the crust and heating the toppings. If the crust is getting crisp and your toppings are nonetheless cold, flip down the warmness. Exceptional to go away pizza straight from the refrig on the counter for a bit of, it'll warmth rapid and work better. Otherwise, when you have a entire pizza, use a pizza crisper pan or just put it on the oven shelf immediately, and warmth it up. About 350 degrees. Did you ever ask them for a half baked pizza? That means that you can come residence and prepare dinner it the way you want.