Looking at GoogleMaps, it looks like you might pass through Memphis. If so, here are some recommendations for "Mid-South barbeque".
The Rendezvous, located in downtown Memphis, very close to the river as you cross the I-40 bridge and enter Memphis. Famous for their dry rub ribs! Excellent food. Beware of the one-way streets, and like any large downtown area, you might not want to be there late at night. Or if you do like night life, Beale St. in downtown Memphis is a great place for blues music, i.e. B B King's place.
Or, if you don't want to stop in downtown, head around Memphis on the I-240 loop (south) and stop at one of the two Showboat BBQ locations for a BBQ plate. Showboat isn't fancy, no table service, you just order at the counter.
Another option is The Commissary in Germantown, the suburb just on the east side of Memphis. It's also convenient to the I-240 loop, exit at the Poplar Ave (east) exit and it's a couple of miles east of the loop.
Ride safe, and full!