That's a shame, because that New Orleans food we serve for the lunch interview is one of our major recruiting techniques. The meal will be available cafeteria style, so you can pick and choose what items to take.
If you interview on a Monday I can guarantee Red Beans and Rice will be available. I've always seen a salad available too. I don't know if the red beans will meet your requirements, but certainly you could run with rice, salad, and whatever else you find / bring.
New Orleans has heavy Roman Catholic influences, so a Friday interview will most likely have fish (like a fried catfish) in one of the trays.