You can get pizza "to go" in the food court at any of the resorts that offer it, which I believe are the same ones PP posted above. Just takes them a few mins to make it. For 2 TS credits total (not PP), you get a large pizza with two drinks and two desserts. This applies to both reg DDP and DxDP. I don't know if the delivery service brings drinks/desserts too. We did this last trip and found it to be a good alternative to traditional QS when we were tired one night and wanted something to take back to the room.
If you want a restaurant experience, Via Napoli is good but you cannot share a large pizza on DDP there. Everyone would have to get an individual one. They are very strict about this. It's also very thin, authentic style pizza which may differ from what kids are used to. It's very good, but it does differ from the QS variety which is more "normal" pizza.