Dewey’s was asked to cater in for the Miss Amazing pageant. Our daughter who has celiac, was performing at the pageant. I called the restaurant to see if it would be safe.
They do everything they can that is reasonable to prevent contamination. They do make the pizza in the same kitchen with everything else but they are aware of avoiding contamination as much as possible. They cook the pizza in a tray and will put it in the top rack if they have other pizzas in the oven. Our daughter reported that she lived the pizza and never showed any kinds of reactions.
I got a build your own pizza on a gluten-free crust. It was delicious. It is made in a kitchen where there is flour everywhere, the crust is made elsewhere and kept on its tray when going through the pizza oven. A bit risky but I did not get sick. It is put together in a separate part of the kitchen and they cut it with a clean pizza cutter. I also was able to get dairy-free cheese.
This is where my favorite place to get pizza. Their GF crust DF cheese is good. They tell you how they can make menu with those options. Always seem knowledgeable.