If you are looking for a very Celiac-friendly restaurant chain with a nice gluten free menu, one company that I highly recommend is Lone Star Steakhouse. Lone Star was one of the first companies to really embrace offering a gluten free menu, and have a great gluten free page on their website.
Here are the two menus Lone Star currently offers:
Lone Star is also willing to answer any of your questions regarding their gluten free menu, which can be directed to nutrition@steakco.com.
To find a Lone Star Steakhouse in your area, check out their Find a Restaurant page. We’ve got a ton of them here in Iowa and it looks like you’ll find them throughout much of the United States.
What a great, simple idea! 
This says it is not suitable for people who have celiac: http://www.kamut.com/en/research.html 
I like that they have more than 1 option available. I love Heidi's idea of an Udi's pre-packaged muffin ...
