Despite Mayor Michael Bloomberg’s advocacy for a healthier diet and strong support for gay marriage, he’s cold on the idea of banning Chick-fil-A within the five boroughs.

As mayors around the country — including Boston’s, Chicago’s and San Francisco’s — are backing efforts to keep the fast food chain out of their cities due to the company’s president, Dan Cathy, spending millions to push back against gay marriage, Mr. Bloomberg said it’s “a bad idea and it’s not going to happen” on John Gambling’s radio show this morning.

“They’re all friends but I disagree with them really strongly on this one,” Mr. Bloomberg said of his mayoral colleagues. “You can’t have a test for what the owners’ personal views are before you decide to give a permit to do something in the city. You really don’t want to ask political beliefs or religious beliefs before you issue a permit, that’s just not government’s job.”