Stars include Back to the Rafters' Rebecca Gibney, Gordon Ramsay's daughter Tilly Ramsay, comedian and Logie winning star Dilruk Jayasinha and Ian Thorpe to name just a few.
And while Dilruk managed to win the first immunity pin after impressing judges with his Sri Lankan Kiribath with Lunu Miris and an Indonesian Beef Rendang, it's not the comedian who is rumoured to take out the title.
Tilly Ramsay and former soccer star Archie Thompson are believed to come second and third, respectively.
Dami Im, Ian Thorpe and Matt Le Nevez aren't so lucky, however, with all three rumoured to come last across the different betting services.
As the series is pre-recorded it could be that someone has leaked the winner, as the betting agencies have so far gotten it right with a number of reality stars including The Bachelor and The Masked Singer.
Ian was recently left red-faced on the show after his 'secret' cooking past was revealed in front of the group and the judges, Melissa Leong, Andy Allen and Jock Zonfrillo.
"Correct me if I'm wrong, but you've got your own cookbook, don't you?" Jock asked Ian in front of everyone.
Ian smiled, confirming the news with Matt signalling for a time-out, jokingly shouting, "Where are the producers! Hang on a minute!"
The swimmer actually has two cookbooks, one called Cook For Your Life, which was released in 2011 and another called Eat Well Now, which came out in 2016.
A synopsis for the first book reads: "Now that he no longer swims competitively or trains for hours, he has been able to apply all that he has learned to his diet and health."
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