The pop songstress appeared as a judge and mentor on the popular BBC One competition last year, but eventually gave up her red chair in order to focus on her music career.
She was replaced by Australian chart-topper Kylie Minogue, who joined original coaches Tom Jones and will.i.am on the show, as well as fellow newbie Ricky Wilson.
But Jessie doesn't seem to be impressed with the new judging panel and has now spoken out about how the foursome are being too nice to their contestants.
Tuning in to watch the show on Saturday night (1 March), Jessie initially sounded excited, as she tweeted: "Watching The Voice UK (Series 3) for the first time... Update me! Who do you think are the most interesting singers so far?"
The feisty 25-year-old then watched as Tom's team, Mairead Conlon and Celestine, sang their version of her hit single 'It's My Party'.
However, the girls' rendition wasn't pitch perfect according to Jessie and she was soon left annoyed when none of the coaches commented on their excessive use of "runs and licks".
Venting her frustration on Twitter, Jessie wrote: "Where is the constructive vocal criticism?! It was TOO MUCH! Vocally messy and too many runs and licks!
"Singers don't and won't improve if you continually say 'amazing' when it's not... Can't get better in a 'Yes bubble.'"
Following a backlash from social media users, who questioned Jessie on her own performances, she proceeded to explain herself by writing: "When have I said that I DONT SOMETIMES riff and run a lot. We are ALL learning! Every singer has to take criticism! Myself as an artist included!
"And I know if I performed 'It's my party' like Team Tom did on the battles that my team wouldn't say it was great. And I wouldn't want them to. The TRUTH is the only thing we can build from! And make it better! So be reaaaaaaal!"
Eek! She certainly sounds ticked off! But her rant didn't end there.
Jessie was noticeably keen to assure her fans that she is always open to learning from her mistakes and taking constructive criticism and so continued: "I am always real with myself. Even if it may bruise my pride a little. I admit when I am not giving my best at anything.
"From work, image, family, love, friendships, performance, fitness, diet, vocals. I can always be a better person and push myself more. All round. Always!"
She added: "When I stop being real with myself is when I step into the danger zone of becoming big headed or bitter when other people are real with me. Or feeling hurt and mistaking constructive criticism with someone being mean. There IS A DIFFERENCE. So I am always honest with me. From the core outwards.
"I sometimes agree with people when their words may not always positive towards me. But I will never know whether something is right or wrong until I do it! listen BUT only when those words are constructive and come from a caring and loving place.
"I listen and try to grow and learn from what people say. Selflessly I try to listen, to my fans,my team, my friends and my loved ones. But I have to listen to me too. My Mum and Dad raised me too well to be anything but real. I know what I have to do! I may not always speak on it but I am always trying to achieve it."
We wonder whether Jessie will be tuning in this weekend?!
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