The newcomer and mother of four stopped by "Watch What Happenes Live" Wednesday night, where she unapologetically threw shade at Teresa Giudice, Danielle Staub and even Jennifer Aydin, who was sitting right next to her.
One of Jackie's first callers identified himself as a "Tree Hugger for life" (a Tree Hugger is a Teresa Giudice fan) before asking her why she was so quick to take Melissa Gorga's side in her squabble with her sister-in-law.
"Of course a Tree Hugger is gonna ask me that question," Jackie replied. "Listen, I just have to say this: I would agree with Teresa, but then we'd both be wrong."
Host Andy Cohen was living for the shade, letting out a very genuine, "Wow!"
When another caller asked Jackie if Melissa had told her any "juicy stories" about Teresa when the cameras weren't rolling, Jackie smiled and said, "I did, and you'll never know them."
Jackie also gently took aim at her fellow "WWHL" co-guest, Jennifer, who has spent much of her first season on the show bragging about her ostentatious house and life.
"[Bragging] is not something I would personally do, but I enjoy watching it," Jackie told Andy. "I like laughing at it."
A third caller asked Jackie where she stood on this season's Margaret Josephs-Danielle Staub blowup, to which she replied, "Margaret's never wrong in my eyes, especially against Danielle."
But we already knew she was gonna say something along those lines. Last month, Jackie told TooFab she "didn't really connect with Danielle so much" because she thinks "Danielle is a little territorial."
On Wednesday's explosive episode of "RHONJ," Jackie made the dire mistake of not only inserting herself into a Gorga-Giudice fight but also bringing up Joe Giudice's imprisonment...to Teresa...who's been known to flip a table in her day.
Teresa was angry with Melissa for the way Joe Gorga blew up at her. She felt Melissa should have been able to "control" how Joe reacted.
"Do you really think Melissa could control her husband's emotions?" Jackie said to Teresa. "I'm sorry, all due respect, but do you really feel like your husband would be in jail right now if you could control what he did?"
"The Real Housewives of New Jersey" airs Wednesdays at 9 p.m. on Bravo.