Chrissy Metz Makes Crew Miserable On ‘This Is Us’

Chrissy Metz, the plus-sized breakout star from “This Is Us,” really knows how to light up a room – with her ego! Now her backstage backbiting is destroying the hit NBC series — as an on-set spy tells RadarOnline: “Chrissy’s been throwing her weight around like a bull in a china shop!”

The source reported: “She snaps at makeup people, she won’t take direction, and she has fits because wardrobe has the toughest time fitting her!” As earlier reported by The National ENQUIRER, Metz signed up for the NBC series knowing that she’d have to drop weight from her 400-pound frame. But the pressure to slim down — plus her sudden stardom — has amped up her diva demands!

“She boasts she’s lost 100 pounds, but she’s already gained a lot of it back,” said the insider. “Now she’s complaining the stress of the show is making her even hungrier!” Queen-sized Metz got her big break with the role of Ima Wiggles on “American Horror Story: Freak Show.” But her breakout success playing weight-challenged Kate Pearson on “This Is Us” sent her over the edge, according to sources.

“Chrissy panics whenever she has to do a red carpet,” the insider said. “She hates watching people whisper how fat she is.” Although her rep denied any problems, the stressed-out diva is back to wolfing down 5,000 calories a day, according to Radar’s on-set spy. “She’ll pound an entire pack of doughnuts at once!” tattled the source. “The production assistants have to go through her dressing room and toss out all the junk food she’s stashed away.”

Metz caused even more tension on the set by failing to tell bosses about her failed marriage to British journalist Martyn Eaden. “She never mentioned it, so everyone was surprised to learn about it,” a show spy sneered. “Chrissy’s had terrible mood swings, and now that her sketchy past is coming out, she’s even more irritable.”