The pregnant model slammed the talk show host in an explicit rant on Instagram.
Taking to Instagram, the model called out Williams for saying Rob needed to ‘put some bass’ in his voice and blasted the host for involving her mother Tokyo Toni.
On Williams’ show on Friday, the host discussed Chyna’s relationship with Rob for a full five minutes.
"For those of us who've been there since the beginning, when Rob was thin, when Rob was smarter, when Rob had more confidence, when Rob was dating Adrienne Bailon, and he just seemed to be a different kind of guy," she said.
"It's very fun to watch Chyna and her mom, Tokyo Toni, come up off of the backs of people who don't see through their ruse.”
"And it's not even about Rob being overweight. ... It's bout Rob's lack of confidence. A woman likes a man to take control. Put some bass in your voice and don't let her run over you. It's not attractive,” Williams added.
But on Instagram Saturday Chyna fired back, posting picture of Williams and writing: ‘Wendy.. Wendy.. Wendy....you lost your motherf***in mind hoe? How dare you speak on me, my fiancé, and my mom like you were at the Christmas table with us?!
‘I find it so funny how you love to talk about Rob and his insecurities like at a point in time you wasn't a fat 400 pound ass bitch on the radio! You telling him to put some some bass in his voice?’
Calling out Williams' longtime husband, Kevin Hunter, Chyna continued: ‘You want him to be like Kevin? Right you want Rob to put some bass in his voice and a fist upside my head next right? You want him to be like your husband? Rob is MY MAN! MINE! I love him for who he is which is why we are together.’
Chyna ended the rant by adding: ‘When I decided to do this show I knew I would be letting the world see us. But your horse face ass woke up on the wrong side of the stable and decide to go overboard with your f**k boy comments. Bitch f**k you.’
Williams has not yet responded to Chyna’s comments, but the post has so far gained over 301,800 likes on Instagram and 58,660 comments.