Rapper turned boxing promoter 50 Cent (pictured) is working hard at his new career. We hear that Fitty, who will work with Floyd Mayweather through TMT Promotions, was breaking bread at STK Midtown Tuesday with Kery Davis, HBO senior VP of sports programming. He’s also met in New York with welterweight Zab Judah, whose contract with promoter Main Events has expired. Fitty was also seen backstage this week at “Mike Tyson: Undisputed Truth” with Kanye West and Spike Lee.