Just here in my town in NC, we have a Bojangle's, a KFC, a Chick Fil-A, a Zaxby's (look it up), BK, McDonald's, Hardee's, Wendy's, Sonic, and a dozen or more local places that sell chicken sandwiches. There's a Cookout restaurant coming soon. Hell even the IHOP and Waffle House have chicken sandwiches. You can't swing a dead cat around here without hitting a place that sells burgers or chicken sandwiches, fries, and a shake. I'm surprised Five Guys doesn't have a chicken sandwich (yet). Good for them for sticking to what they do well (burgers), I suppose.
We actually don't have a Popeye's, which is weird. There's one in New Bern and in Jacksonville, each a half-hour away.
They're all good in their own way, I suppose. For me, I'm a hold the mayo guy. And for that I give Chick Fil-A the nod. Their standard is "no mayo" so I don't have to ask to have them hold it. Nothing worse than getting a mile away from the drive-thru and biting into a sandwich with gobs of mayo, all because someone can't listen.