Kim Zolciak filmed a reality show pilot with her daughters Brielle and Ariana, but her estranged hubby Kroy Biermann is completely MIA from the project … TMZ has learned.

Production sources tell us … despite the awkwardness of Kim and Kroy still living under the same roof, cameras were rolling at their Georgia home in January after a production company approached Kim, asking to document her post-split life.

Our sources say the pilot has been getting shopped around for over a month now … and there’s one particular network showing a lot of interest. We’re told Bravo — Kim’s old ‘RHOA’ stomping ground — isn’t the network where the series would potentially land.

In terms of what this is actually about … we’re told the pilot is centered around the tension between Kim and her daughters as they dive headfirst into discussing the reality star’s ongoing divorce drama. That’s not all though … the pilot will also showcase the ups and downs of Kim’s financial struggles. But again, Kroy himself NEVER shows up at all.

While Kim and Kroy’s kids — 12-year-old KJ, 11-year-old Kash, and 10-year-old twins Kaia and Kane — don’t appear in the pilot either, we’re told there’s a chance they could be featured in the series if it ends up getting greenlit. Never say never, we suppose.

According to our production sources, there’s a solid chance this show gets the go-ahead for a full series in the next couple of months … which would be a big W for KZ.

Needless to say, Kim and Kroy have had their fair share of ups and downs since announcing their divorce last May … and money’s been key to all of it. They appeared to hash things out a few months later, but Kroy filed divorce docs again in August.

Things hit a boiling point in November when a massive blow-up between them had one of their kids calling the cops. No one was arrested, but it was a tense moment caught on video.