6. Ono Hawaiian BBQ
2020 U.S. system sales: $146 million
Overall rank: 179
Ok, this is more traditional. The California-based Ono, a 96-unit fast-casual brand that operates Hawaiian-style barbecue restaurants, added seven more locations last year but largely grew through strong sales growth in 2020. Its system sales have nearly doubled over the past five years, according to Technomic.