Nutrient-dense ingredients such as avocado, olive oil and blueberries are proliferating on menus, Datassential finds
Smashburger, Shake Shack and Chipotle are among chains championing local breweries
The trending veggie appears in salads, flatbreads, condiments and even cocktails
Among the biggest rollouts were Little Caesars' deep-dish pizza and KFC's boneless chicken.
A selection of new appetizers and desserts are part of Red Robin Gourmet Burgers' ongoing plan to build bar sales and boost check averages.
The casual-dining chain aims to boost average check
Original Recipe Boneless chicken will debut mid-April
Americans ate more seafood during the period this year than in previous years, GrubHub finds