"It's disrespectful," Jenner says in the new clip. "I think I've often made excuses for Scott and it's just getting tougher and tougher"

Kris Jenner may officially be over Scott Disick.

In a new E! News clip from the upcoming Keeping Up with the Kardashians season finale, Jenner reacts to photos of Disick with ex-girlfriend Chloe Bartoli while on vacation in Monte Carlo.

“That piece of s—!” Jenner, 59, says in the clip, having just heard from a Kardashian cousin about the photos.

“It’s disrespectful,” Jenner says in an interview in the clip. “I think I’ve often made excuses for Scott and it’s just getting tougher and tougher.”

Disick and Jenner’s daughter, Kourtney Kardashian, split in July after nine years and three kids together.

Kardashian, 36, broke down in tears over the photos, telling sister Kim Kardashian West, “I worked so hard to keep this family together.”

In an earlier KUWTK clip, Kardashian discussed Disick’s substance abuse issues: “As time goes on, Scott seems to just get worse,” she said. “You know, I want to be mad but then I also worry about just Scott’s safety and you know, he definitely has a problem that he has to deal with.

“It’s hard, I feel like my emotions get like, all over the place.”

Disick and Kardashian are now working to build their separate lives, a source previously told PEOPLE.

“[Kourtney] just doesn’t want drama,” the source said. “She wants it to be clean and to move on.”

Disick has been seen partying since the split, including with 18-year-old student and model Lindsay Vrckovnik.

“Unless there’s a miracle, he’s not getting back with Kourtney,” a Disick source previously told PEOPLE. “He feels free and ready to have fun.”