My husband and I were at Panera Bread yesterday (without our PA son), and I noticed a sign saying that if you had food allergies or sensitivities, you could ask for a complete list of ingredients.
I inquired about this, and the counter person pulled out a huge binder with nutrition information, ingredient listing, and allergy information for every item on their menu. It was a full page for each item, nice big print and easy to read. They also had, at the front of the binder, a quick reference chart for many of the common food allergies.
I eat there occasionally and don't recall seeing this information before, so hopefully it's a move in the right direction!