Louisville, Ky. — Papa John’s International, Inc. has signed its largest traditional store development agreement in North America in over 20 years, accelerating growth of the Papa John’s brand in the Philadelphia area. Under the agreement, HB Restaurant Group, which currently owns 43 restaurants in the Mid-Atlantic area and has been a Papa John’s franchisee since April 2019, is to open 49 new stores in Philadelphia and southern New Jersey between 2021 and 2028. “Papa John’s has long offered franchise investors one of the fastest paybacks in our industry. Recent …