ALL the meats have flour. Unless you eat vegan you can't really avoid the gluten. I was appreciative of their knowledge to basically tell me to eat elsewhere!
As of 2014.08 - they have a printed gf list if you ask for it with good options.
The staff is very knowledgeable about what contains gluten. They use flour in many of their sauces but know which ones are safe. Ask for a manager and they will help you navigate the menu. Good option if you are flying southwest in Denver. They also have eggs and beans for breakfast if you have an early flight.