Kim Zolciak and Kroy Biermann are falling deeper into the debt hole -- she just got hit with a new credit card lawsuit ... meanwhile, a different judge just ordered him to pay 5 figures.
The embattled couple had some new legal docs come their way Tuesday -- in Kim's case, she's now being sued by Chase Bank over a balance they claim is way past due ... they're suing her for $4,624.02
In the docs, obtained by TMZ, Chase attached a bunch of statements from her account to demonstrate she's been behind on payments dating back to Nov.