New CNN chief Jeff Zucker is looking at Erin Burnett to revive the cabler’s moribund morning ratings, writes The Post’s Richard Johnson. Burnett, who burst onto the TV news field at CNBC, is now hosting the 7 to 8 p.m. hour on CNN. “Zucker thinks she’s a real talent,” a source said. “He’ll team her up with a guy, and they’ll go after the audience watching ‘Today’ and ‘Good Morning America.’ One thing Zucker knows how to do is a morning show.” Zucker became “Today” executive producer in 1992 at the age of 26 and orchestrated its 16 years of ratings dominance.