Friends Fear Kelly Clarkson Is ‘Taking on Too Much’ By Signing on For New Season of ‘The Voice’

Kelly Clarkson is adding yet more gigs to her breakneck schedule — recently inking a cash-spinning pact for a new season of The Voice — and insiders say friends fear the backbreaking load will plunge the burned-out songbird over the edge.

NBC revealed that the 43-year-old “Stronger” singer will be joining Adam Levine and John Legend for The Voice: Battle of Champions after a two-year hiatus.

Sources say that people around Kelly were shocked she would make another deal on the heels of being forced to cancel the first shows of her Las Vegas residency because of vocal strain during rehearsals.

“The Voice doesn’t air until spring next year, but she still has a residency and a talk show, and the feeling is she’s taking on too much, especially in her fragile state,” says an insider. “She’s burning out and running on fumes. It’s astonished friends that she’s taken on The Voice.”

Kelly has been stressed at her talk show after clashing with NBC’s HR department for “inappropriate” comments to guests about the way they look. But, adds the insider, “Bosses want her to stay despite their differences, and conferences are in the works.”

According to our insider, Kelly’s blowing off concerns and telling pals she can handle the load.

“The Voice is a favorite of hers and it’ll be fun, but people would have preferred for her to pass on it, take a break, be with family and stop worrying about money.”

As Globe has reported, Kelly’s been keeping an eye on finances after she was forced to dole out millions to her ex-hubby, Brandon Blackstock, in their divorce.

“She still has plenty in the bank, but she wants to strike while the iron is hot. Maintaining homes in New York City, Montana and L.A. is costing her a fortune, plus there’s the kids’ school and college funds.”

“She’s putting herself in the spotlight to stay relevant but she’s clearly unable to handle it. It’s a drain on her physically and emotionally. Why else would she be canceling gigs?”

“There comes a point when a person has to say no, and it’s arrived, but try telling that to Kelly.”