Palmer's Deli & Market is located in the Kaleidoscope at The Hub - easily accessible via Skywalk. They offer gluten-free sandwiches on Udi's multigrain bread. It is made at the counter in front of you and the staff makes sure to change gloves and prepare your sandwich on a special cutting board. I have now eaten at Palmer's twice and have not had any issues. The sandwiches are huge - allows for leftovers - and the price is reasonable for lunch.