Panic-stricken BRITNEY SPEARS, freaking like she was on the verge of a head-shaving, sobbed to fellow “X Factor” judge DEMI LOVATO that she fears network execs will fire her from the $15 million gig!

Said My Xcellent SpyWitness: “Britney was in Demi’s dressing room, crying her eyes out because she’s cracking under the strain of producers constantly coaching her on how to be more outgoing, talkative and constructive on-camera. ‘They hate me,’ Britney wailed, saying she knows she won’t be back next season.

"Demi tried to comfort her – saying it was all in her head – but it’s not, of course, because despite the coaching, Britney continues to come across as stiff and boring.

And whenever she sees the execs huddling and talking in hushed tones, she thinks they’re conspiring to get rid of her!”

Demi kept telling Britney she’d be back next season, but Swamp Thang isn’t convinced.

(Me neither, gal!)