Cloud Nine Diner at the airport in Paintsville / Prestonsburg, KSJS, is good. It's in Eastern KY but may be a little far from Nashville for you. The runway is shaped like a ski jump, with the FBO at the downhill end. We often saw elk and turkey while taxiing uphill for departure.
Apparently there aren't many restaurants in town. One Saturday about this time, my wife and I went there for her birthday supper and the line was out the door. It was full of teens in tuxedos and prom dresses, and theynwould periodically walk to a table across the room to talk to their parents.
Good food, though, well worth going to, and friendly folks in the FBO. Stretch your wings, go a little further and use a To Gombix to bring home the leftovers (we always did!).