I did the TGI Fridays To Go location at DFW gate B9. They have GF items marked on menu and were helpful. The fries are NOT in a dedicated fryer. I got the cheeseburger with an Udi's bun (no upcharge-nice), and they let me sub a bag of Lay's chips for the fries.
— Very
— Gluten-free items are marked on the main menu
— Some
— Excellent