Gluten-Free is on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
Burgers on a gluten-free bun, fried in a separate allergen-free fryer and assembled wrapped to keep them off shared surfaces. Gluten buns are handled in the same kitchen, say what you react to.