Be wary - I am celiac and I tried their GF pizza. It was very tasty, but the staff was not very knowledgable about GF preparations and could not tell me if their toppings were GF.
Overall, I was nervous about their preparation and I should have just left.
Instead, I tried it. It was good pizza, but I definitely had a reaction to it. If you truly need GF food, beware. I'm 99% sure my pizza was cross-contaminated.
I won't be going back - not worth the risk.
No