On the subject of Chick-fil-a & sauce, they have both a Honey BBQ sauce that comes in a packet and a special Chick-Fil-A sauce that comes in a little rectangle with foil top (like jams or jellies do).
Both of these are attempts at copying the sauce from a chicken fingers restaurant called Guthrie's. Chick-Fil-A started up in the same area. Athens has a Guthrie's.
http://www.guthrieschicken.com/about.php
Athens has one of the first Waffle Houses. Actually, make that "had," because I think that particular location has now closed down. It has one of the very first Arby's. Not that either are all that good, just sayin'. Athens has several soul food restaurants. There's two I can't even think of now that are also cafeteria-styled. They were good too. The ones I can think of are, of course, Weaver D's ("Automatic For the People"), The Mayflower, Jana's, Food for the Soul, and Wilson's. Honestly, how many other places the size of Athens, GA have so many soul food restaurant choices? Walter's BBQ opens every now and then, and it hasn't been all that good in awhile. There are a few other BBQ restaurants that have smokers outside.
Of perhaps more interest (b/c of the Seinfeld ep), it has the first Kenny Rogers Roasters.
Funny thing is, no one ever goes to it in Athens because of its odd location way down Atlanta Hwy., and because there simply are so many other places. And I don't mean Boston Market. Kenny used to come into the Athens Sushi Bar when I worked there. Thinking back, I got to see the surgeries/botox whatev firsthand haha as his face was transformed into shit.
Here in town there was a place called the Blue Moon Diner that was amazing for what it was, but it closed down. After almost a year, it reopened under new management, but it's only just okay now and nothing very special. Pittsburgh and Philadelpia have some bomb restaurants for greasy, "American"-style fare.