Not a chain but The Ornery Chicken is really damn good
I miss OC and Charlottes. B-Bops chicken sandwich is underrated too.
For chains, Slim Chickens is good. Chick Fil A and Wendy’s are good sandwiches. Popeyes is the tastiest, but can be hit or miss. I’m sure Southern chains like Zaxbys and Bojangles are good, but haven’t really tried them.