Papa John's hires Arby's head as CEO to turnaround struggling pizza chain

(Reuters) - Papa John's International Inc on Tuesday named Arby's Restaurant Group Inc President Rob Lynch as its chief executive officer, replacing Steve Ritchie barely 19 months after he took the role, sending the shares of the world's third largest pizza chain up 3%.A former marketing executive at Yum Brands' Taco Bell and Procter & Gamble Co , Lynch will be tasked with turning around the company's struggling sales as it fights to get past the negative publicity surrounding its founder John..