Hi Lynne,
Thanks for visiting the Disney Parks Moms Panel.
While there's lots of great food at Epcot, which is probably why it is my family's favorite park, you won't find a lot of pizza on the menus. We think the pizza at
Via Napoli in the Italy pavilion of the World Showcase is the best anywhere at Walt Disney World, and its child's menu does have a mozzarella pizza on it. I recommend a meal here for sure, but an advanced reservation is a good idea.
You also can find a vegetable flatbread on the child's menu at the Electric Umbrella in Future World. And Sunshine Seasons in the Land pavilion has a pizza panini meal for kids. We're fans of Sunshine Seasons for its variety and quality.
Beyond that, I can't think of any place to get a slice or an individual pizza at Epcot. (There used to be a pizza cart near Test Track, but that was removed during the renovation of the ride and, the last time I checked, it had not returned.)
I hope that is useful. Even though the pizza options aren't vast at Epcot, there are lots of wonderful tastes to explore there for both adults and children. My daughters have been really adventurous eaters since they were small, and we believe that is due, in part, to all the time they've spent at Epcot.
Please let me know if I can answer any other questions for you as you plan your visit. Enjoy!
Wilma