I love Panera! I like to get their choose two option. I usually get a cup of their tomato basil soup and their Cesar salad with grilled chicken. (Make sure you tell them to leave croutons off of everything.)
Panera has several gf items. The black bean soup is my favorite. Ask about their hidden menu.
I was pleasantly surprised to find out they have more than just salad. The Autumn squash soup is gluten free and delicious. The cashier even put on the order that there is a wheat allergy.
Avoid at all cost. I ended up on the hospital for a week after eating here. My gf salad had a large piece of bread soaked in salad dressing at the bottom of my salad. I alerted them of my allergy and they just put the French bread at the bottom of my salad instead of leaving it off. Not worth the risk.