We now have a gluten free crust for your enjoyment [medium size only].  I have been looking for a gluten free crust for many years and have tried dozens of companies.  About 3 years ago I found one that met my expectations.  This is an honest-to-God pizza crust.  Most companies just make crusts from rice flour and it really doesn't have the taste or texture of a real pizza.  After years of testing we are now bringing it to all of our locations. 
The gluten free crust is only available in the medium size. Please select the Gluten Free crust type when you order your medium Original™ pizza.

Note: MrJims.Pizza gluten-free crusts are made in a dedicated gluten-free facility by Smart Flour Foods, a leading national producer of gluten free products that serves both celiac and gluten intolerant customers, along with those who simply prefer to avoid gluten. The crust are certified gluten-free, but MrJims.Pizza restaurant kitchens are not. While we take reasonable precautions to avoid cross-contamination, please note that it is possible that the gluten used in our traditional pizza crusts and other foods could come in contact with our gluten-free crusts. The level of such potential contact is likely minimal and would not affect most people. Please take appropriate considerations, however, depending on your individual needs.
We use Smartflour Foods Ancient Grains pizza crusts.  It's made with Smart Flour (Tapioca Flour, Sorghum Flour, Teff Flour, Amaranth Flour), Potato Starch, Modified Tapioca Starch, Sorghum Flour, Water, Olive Oil, Sugar, Agave, Flax Seed, Yeast, Salt, Xanthan Gum, Baking Powder (Sodium Acid Pyrophosphate, Sodium Bicarbonate, Cornstarch, Monocalcium Phosphate), Guar Gum, Baking Soda, Canola Oil.  And it's naturally Free of Gluten/Wheat, Casein/Dairy, Egg, Soy and Rice.