Savannah Chrisley is her fiancé Jason Galanis’ “biggest con yet,” according to the convicted fraudster’s own brother.

Galanis, 56, — a career criminal and ex-business associate of disgraced former first son Hunter Biden — was identified Tuesday as the mystery man engaged to reality star Chrisley, 29, and expecting a baby with her.

“It’s his biggest con yet,” Galanis’s estranged brother, Derek Galanis, claimed to Page Six in an exclusive interview. “This girl’s in for a rocky ride.

“He’s not a changed man, he’s the same dude he always was.”

Once dubbed “Porn’s New King,” he was sentenced to 189 months in prison in Sept. 2020 for his role in multiple security fraud schemes.

He served time at Federal Prison Camp in Pensacola, Fla., in 2023, alongside Savannah’s dad Todd Chrisley, before the pair were pardoned by President Trump last year.

“My brother is one year younger than her father,” Derek said. “They were in prison together, right?

“Both my brother and her father were pardoned by Trump. This is a continuation. It’s wild.”

“Chrisley Knows Best” star Savannah announced her pregnancy and engagement to a man named “Jason” — later identified as Galanis — in an Instagram post Tuesday.

“I’ve prayed for this life. I’ve cried for this life. And there were moments I truly wondered if this life would ever be mine,” she captioned the video with Jason and her growing baby bump.

On Tuesday’s episode of her “Unlocked” podcast, she shared that they met through politics while she was fighting for her dad and mom Julie’s release from prison for bank and tax fraud charges. 

She revealed on the episode that they got engaged in December 2025 — just five months after they began dating. Savannah also noted their 27-year age gap.

On Tuesday night, she defended her unborn child by posting a sonogram on her Instagram Stories. 

“You are not a headline. You are not a controversy,” she wrote. “You are not defined by anyone’s past, anyone’s mistakes, or anyone’s opinions.”

Jason was a business partner of Hunter’s from 2012 to 2015, he told the House Oversight Committee in 2024.

Derek, 54, was convicted of fraud in relation to a securities conspiracy led by his brother Jason and their white-collar criminal father, John Galanis, between 2009 and 2011, and later wrote about it in his book Greed and Fear: The Galanis Crime Family.

He said the last time he spoke to his brother was in 2016 while they were locked up together at the Metropolitan Correctional Center in New York.

Derek said he knows his brother has not changed because he has not thanked him for speaking out publicly about Hunter Biden’s connection to the Galanis family.

“My noise about the Hunter Biden stuff is what got him out of prison,” Derek said.

“You’d think he’d picked up the phone to say, ‘Hey, Derek, thanks for that.’ No, it’s off to the next thing.”

Hunter Biden, 56, and Jason were both equity partners at Burnham Financial Group (BFG), where Hunter served as vice chairman.

Through BFG subsidiary Burnham Securities, Jason orchestrated a $60 million fraud scheme to sell fake municipal bonds to the Wakpamni Lake Community of the Oglala Sioux Tribe in South Dakota, according to federal court documents.

Jason cooperated while behind bars with House Republican investigators who were looking into his dealings with the 46th president’s son.

President Trump commuted Jason’s sentence last year while he was locked up at a corrections center in Montgomery, Ala.

In his 2024 testimony to the House Oversight Committee, Hunter played down his ties to Jason.

“I think that 10 years ago for 30 minutes I was introduced to Jason Galanis, and that’s only – the only time I ever recall meeting him,” he said.

Jason was previously married and officially divorced in 2018 — as he was served with papers while in prison. 

Page Six reached out to Savannah’s rep and Jason for comment.