Although I don’t have a Carl’s Junior in my area, this has probably been our most requested gluten free menus to date, so I figured I should see what I could find for our readers and post it here.
If you look on the official Carl’s Junior menu page, you’ll notice a PDF file for Allergen Information (link provided, however that link will likely break after they update their allergen information). There you’ll find a 2 page chart of allergen information, but they only list foods that contain wheat.
If you are determined, Carl’s Junior also has a PDF file with their ingredient guide (link provided, however that link will likely break after they update their ingredient guide) on their website which lists every ingredient in every item on their menu!
That would take awhile, however, and you would still have to worry about cross-contamination, so I recommend people with Celiac Disease visit Carl’s Junior at their own risk.