California Pizza Kitchen has brought back the gluten free pizza again, this time with stricter standards. I opted to try the mushroom and pepperoni with sausage, although the pepperoni was missing, it was very good. I also did not get cheese, the sauce was a little light, but the pizza was very good and as big as my husband's pizza which was great. I actually got to take some home this time, and had no ill after effects. It is around 2 dollars more than a regular pizza, so around 14 dollars I believe.
http://www.cpk.com/menu/#gluten-free-pizzas
Here is some more information on precautions and such
http://info.cpk.com/documents/gluten_free_menu.pdf