My dad has celiac disease and I found the Monster Pizza website online and he wanted to try it. All I can say is in the 5 days they were at Hilton Head, he ate there 4 times!!!
He was only going to eat 1/2 the individual GF pizza, but ate the whole thing each time- even had it delivered once. I guess it was really good!
The one time I went there for lunch with him, the friendly manager came over and explained how careful they are in the kitchen and use special tins just for the GF (disposable I believe) and they dont even cut the pizza- you do it yourself- so there is no cross contamination. They have several toppings that you could add to your pizza too.
They even advertised GF BEER to go with your GF pizza.
They have another location at 30 William Pope Dr., Okatie SC as well.
Not a big GF menu, but the place to go when you want a decent GF pizza and they seem very careful about it too.