Facebook fan Liz shared this recommendation with us:
Potbelly has a full allergen list for all their menu items that is easy to follow. They even mark their items as vegan or vegetarian.
For allergen info, head to the super-cool nutrition calculator on the Potbelly website. It allows you to custom pick ingredients while it calculates not only the nutrition facts, but also updates the declared allergens. This way you can figure out how to mix and match to build your ideal sandwich (watch for cross-contamination in the shop though if that is a concern for you!).
Potbelly offers breakfasts, salads, sandwiches, and soups that are dairy-free, as well as several vegan options. They are located in various states throughout the U.S. See their website for a store locator as well as online ordering for pick-up or delivery.