If you can find parking, check this place out. They have a good selection of sandwiches, salads, and desserts. There aren't too many vegetarian options but the Mediterranean sandwich is good. It has red pepper hummus and veggies on toasted bread. They don't have a good drink selection so I usually just bring my own water.
The best part about Potbelly is the milkshakes and the homemade cookies. The chocolate milkshake is amazing and the fresh oatmeal chocolate chip cookies just melt in your mouth. Try them! But don't look at the calories... You'll regret it.