Chyna unloaded on her baby daddy early Wednesday morning, saying ... "It's funny now to me !!! But when Tyga and side n**** kicked me out !!! And they wanted to see me fail ! lol And 2 grind from the dirt !!!!! No child support!"

Her Snapchat attack on Tyga was filled with seemingly random references -- some of it's hard to decipher -- but her overall point is clear: PAY ME, BITCH! She also wants "Jenny," the babysitter, to get paid.

BC got personal too -- "So go tell Kylie , and Rob ! About our son Account ! Cause that's the only reason I'm contacting ur f** ass!"

Tyga not paying people is nothing new, but Chyna ain't settling for the status quo ... obviously.