Love Putnam market's salads and gf options. They also carry Maia Kamal chips, a local gf brand that's amazing. And they're very friendly and helpful when you say you need to order gf.
They Wrap gf sandwich in foil before panini grilling it. Usually one soup a day that’s celiac friendly and the cold and hot bar are usually gluten friendly. There is a risk for cross contamination since it’s self serve, but most of it is gluten free so it would be minimal.
They use Udi's bread for sandwiches and have a ton of GF deserts including squares and cupcakes.