Wrapped no bake peanut butter cookie that is certified gluten free. It is located in the case with their donuts, however it's in a separate dish below the donuts. There are some other to go gluten free options, like guacamole and chips, hard boiled eggs, and celery and carrots. I know that the MTO tater tots are GF. Not sure if any of their food is celiac friendly.
Sheetz is a great place for a quick bite.