The posters advising on re-heating it in a hot, nonstick skillet have it right. It crisps up the bottom of the crust nicely. I just lay a sheet of foil over the top of the skillet to keep the heat in and thus re-melt the cheese, and it works well.
I have a toaster oven. Sorry, I should have specified. I’ve seen people put their slot toaster on its side when making cheese bread though, might work for pizza.
Most places will sell you a half baked pizza. Put it in a hot (450-500) degree oven when you get there and keep an eye on it. It would be best if you had a pizza stone or Mexican paver tiles to put it on, otherwise use a cookie sheet.
An engineer friend of mine tried to bake 2 cookies in his toaster. He’d seen commercials where they showed cookies baking in the oven in fast-motion, and having never baked cookies himself, didn’t realize that they melt. He got a tube of chocolate chip cookie dough, sliced it, and stuck 2 slices in the toaster. Hilarity ensued.
There was a pizza place near me that had a $2 discount for buying uncooked pizzas. I never understood why…they’ve already got the oven. But I didn’t live far away and the results were great when I baked it myself so hells yeah. The pizza was better, maybe, in that you could also doctor it more and pull it out when you thought it was perfect.
They didn’t cut it either…in that unbaked state, maybe they couldn’t. That gave some freedom—when I was growing up, we used to cut it into (mostly) squares.
Some crave a piece that’s mostly crunchy crust…others not so much. Perhaps the pizzeria was accomodating that.