Welcome to the south.
Peggy’s in Philadelphia is a fun experience. Also, Mary Lou’s Bisuit Bar in Louisville for a hearty early morning breakfast. Lake Tiak-O-Khata in L’ville for buffet lunch or order from the menu. Cream pies are good. The Ole Country Bakery in Brooksville for lunch (serve sandwiches & soups, too). Operated by Minnonites. Oby’s in Starkville for po-boys. Dreamland BBQ in Tuscaloosa. Go to the original one for the true dining experience.
Narrow your route down a bit for us & I’ll send some more ideas.