First of all I am surprised they actually brought people who are actually good cooks. Even without celebrity status, they have the skills to give audition and clear screening to reach TV audition Round of normal masterchef.
The only doubt would be on Usha Tai.
As for my fav it's Teja Obviously. 
There are some people I will never like no matter what. Faizu, Deepika, Archana, Nikki, Rajeev. Multiple reasons combined.
Kavita ji is lost in the celebrity world. She should have been given a training on how to deal with celebs on camera .
Gaurav, Abhijeet are decent. Good ones. Waise gaurav kabhi kabhi alag zone me chala Jaata hai. 