Kim Zolciak's relieved she's "finally free" from Kroy Biermann ... breaking down onstage while talking about her divorce -- and, clearly she feels like she's been under immense pressure.
The reality television star appeared at a live taping of a new show Kristin Cavallari is landing with NBC ... and, they dove into Zolciak's divorce -- the first time KZ's really sat down and discussed it.
talking it out
While we don't have video of the two diving deep into it .