Had the GF pizza a few years ago. Just the frozen pre-made pizza in a pan offered by Chuck-E Cheese and Sesame Place. Not a good pizza at all. It was safe for celiac, however. Ordered GF penne with vodka sauce. It tasted okay, but I did get a little sick the next day. I was told they water was for gf pasta only. Some CC going on, though. I am not terribly sensitive, so it was pretty disappointing. Won't be going back.
My kids are celiac and they love Lenny's pizza. We've had it many times and they have never had a reaction. They give you a sealed, plastic pizza cutter so you can safely slice it yourself. GF pasta is also available and we were told it is cooked in its own water to avoid cross contamination.
I went in on a Sunday evening with my family and despite the crowd, had a reasonable wait time to be seated. They only have gluten free pizza and pasta on the menu. They were out of gluten free pizza. I asked the waiter to check with the kitchen if the gluten free pasta was cooked separately from wheat pasta. He told me it was cooked in the same water. I really appreciated the waiter checking and his honesty.