Nathan Griffith just fired some MAJOR shots at Jenelle Evans!

The pregnant Teen Mom 2 star and her ex are definitely not on good terms, which was made clear when Nathan accused Jenelle of smoking marijuana while she's with child.

MORE: Check Out Amber Portwood's Post-Plastic Surgery Body

jenelle evans and nathan griffith splash

According to Radar Online, the troubled star was hit with the troubling allegations at the season 8 reunion taping.

"Of course he's going to accuse me of crazy things at this point," she said.

Her mother, Barbara Evans, made similar claims against her current boyfriend and baby-daddy-to-be, David Eason — but Jenelle assured the outlet that's not the case.

jenelle evans david eason getty images

This will be baby No. 3 for both Jenelle and David, but their first child together. The couple of one year revealed in July that their little girl, Ensley, will arrive in January.

See how much the Teen Moms have changed over the years in the gallery!