"Chicken Dinner" was the name of a candy bar that was produced in the early '20s by Sperry Candy, a company based out of Milwaukee, Wisconsin. The name came from the concept of “a chicken in every pot” a slogan repopularized for the 1928 Republican Presidential campaign. At some point, the company started building Chicken-Trucks that would be used to promote the candy and it seems also sold the candy like a modern-day ice-cream truck. Each was one unique and had its own version of a stylized chicken integrated into the bodywork.
The flavor of the candy thankfully didn't taste like a Chicken Dinner, instead, it was filled with nuts and covered in chocolate. It was described in ads as “An expensive, high-grade candy.” It stayed in production for nearly 40 years before being discontinued in the 1960's. It is also rumored to be a source of the phrase "Winner, Winner, Chicken Dinner" from when a Chicken Dinner Candy Bar would be a prize at fair or carnival.
The candy made it until 1962 when the company was purchased by a competitor and the brand was discontinued.