A sign outside a KFC restaurant in the Atlanta suburb of Conyers, Ga., taken last month. In Smyrna, another suburb of Atlanta, the fast-food chain will test market a new meatless chicken on Tuesday.

A sign outside a KFC restaurant in the Atlanta suburb of Conyers, Ga., taken last month. In Smyrna, another suburb of Atlanta, the fast-food chain will test market a new meatless chicken on Tuesday.