Somebody asked that question yesterday, and here was spacemermaid's reply:
If you want good pizza, here's the place to get it from:
http://www.marrispizza.com/
I discovered this place on my last trip to the Park (it was right next to the hotel I was staying in)...their pizza is SO GOOD, the price is right (they won't charge you twice the price just because they're near the Park!!!), and they deliver. It's been there almost as long as
Disneyland has, so they must be doing something right .