Good luck with this one, buddy!

Rob Kardashian has filed court papers asking for a modification to the $20K-a-month child support payments he currently gives ex Blac Chyna for their daughter Dream, and the reality star claims he doesn't make enough dough to cover it!

Rob says he "can no longer afford" the huge payments, because BC's domestic abuse allegations and the restraining order she got against him is costing him work. His main source of income up to that point? His Keeping Up with the Kardashians paychecks!

"I have not participated in the filming of any episodes since this summer when [Chyna] filed a request for a restraining order against me. Her request was widely publicized and I was scrutinized by the media,” the documents read, according to The Blast.

"It has been an extraordinarily difficult time for me emotionally and I have no desire to continue participating in the reality show. I would like to maintain my privacy, try to recover from the emotional damage of the past several months, and explore other business ventures," he added.

Instead, he insists Chyna is the real breadwinner, with her raking in over $60K-a-month with a net worth of over $1.4 million, so she should pay HIM child support!

They are due in court in December. What a mess!