My local Fred Meyer store has a whole section of gluten free foods. There's even a pizza made by Amy's with a rice crust. I had a small rice crust pizza about 6 weeks ago. It's slightly sweeter than a wheat crust and more crumbly. No "chewy" character. It was the first piece of pizza I've eaten since 1994. It was good overall. I wouldn't do it often.
I've overcome the "chewy" problem with chewing gum, although chicken dinners served at political fund raisers could be a regular substitute "in season".
We're going to try some chickpea flour to make a pizza crust.