Now that former first daughter CHELSEA CLINTON has scored a brand-new TV gig, her husband is feeling more out in the cold than ever!

The ENQUIRER has learned that Marc Mezvinsky, who has been married to Chelsea for less than two years, believes that her new job as a correspondent for NBC News will stretch his already-busy wife too thin, add even more strain to their rocky relationship and ultimately cause her to put off motherhood.

And he’s NOT happy!

“As Chelsea’s star continues to rise, Marc’s self-esteem and con­fidence has hit a new low,” a friend of the couple revealed.

“He’s bummed out that she’s putting her career ahead of repair­ing and nurturing their marriage.”

In addition to reporting for “NBC Nightly News” and for Brian Williams’ news magazine “Rock Center,” the 31-year-old also works for her father’s Clinton Foundation as well as the Clinton Global Initiative and New York Univer­sity.

She’s also pursuing a doctorate at Oxford University. And if that weren’t enough, she serves on the boards of the School of American Ballet and the interac­tive media and advertis­ing company IAC.

Meanwhile, Marc is trying to get back into banking after quitting his Wall Street job last year and spending time as a “ski bum” in Wyoming.

“It’s gotten to the point where Chelsea is never around, and it’s become frus­trating for him to find quality alone time with his wife,” the insider noted.

“Marc has to schedule appointments just to see her!”