Goode Company is a BBQ restaurant in Houston, Texas, with a GIG-approved gluten free menu (http://www.goodecompany.com/images/pdf/restaurantmenu/Q1-Menu-Gluten-Free.pdf). All of their rubs and seasonings are gluten free, and they do not use MSG. Their sausages are all gluten free (not dairy free, however) but their rice should be avoided as the chicken stock has traces of gluten in it. They usually have a gluten free beer (Redbridge) so be sure to ask since it can be out of stock at times.
Be sure to ask the server to clean the cutting board before they cut your meat to avoid cross contamination. They list their gluten free meat options on their gluten free menu as well as their gluten free sides and dessert options (Blue Bell ice cream). They request that you always check in with the server or manager about your dietary needs since ingredients are subject to change.