This hot-and-spicy full-service chain serves chicken, sides and plates. Gus’s recently announced plans to triple its units, with expansion to D.C. and Burbank, Calif., and is eyeing an overseas rollout as well. Most units are franchised, but the original Gus’s in Memphis is still run by family of the founder.

LocationMemphis, Tenn.
2016 Systemwide Sales$33,900,000*
% Change in Sales44.9%
2016 U.S. Units19
% Change in Units46.2%
2016 Average Unit Volume$2,120,000*
% Change in AUV4.2%
Future 50 Year2017