I was recently diagnosed with Celiac, so I gave them a call. The person I spoke to over the phone said they are generally unable to accommodate dietary restrictions and that they have a small kitchen which would be a concern for cross-contamination. However, many of their items are naturally gluten-free (like steak, which is what they're known for).
I've eaten here in the past, and will say their burgers are fantastic!
— Somewhat
— No gluten-free information on the menu
— Some
— Excellent