The 68-year-old appeared frail and concerned while running errands near his home in Kentwood, Louisiana.
Keeping his head down, Jamie attempted to go incognito, dressing in sunglasses and a baseball cap.
Wearing a baggy gray shirt that appeared two sizes too big, Britney's estranged father rushed past nearby photographers into the shops on Monday.
Pairing his graphic tee with cargo shorts and slides with socks, the controversial Spears patriarch looked emotionless just days after his oldest daughter slammed him in court.
Jamie -- who has struggled with health issues in the past -- was spotted outside his trailer park over the weekend.
Britney's father lives in an RV near the singer's hometown despite collecting $16,000 per month and an extra $2,000 monthly for office space from his daughter as her conservator.
His Dutchmen 'Denali' fifth wheel retails for around $35,000.
He was photographed inside a warehouse -- where he parks the RV -- with a friend while supporting his youngest daughter, Jamie Lynn Spears.
Britney dropped explosive claims while addressing the judge in her 13-year conservatorship for the first time nearly one week ago.
The Grammy winner didn't hold back. She compared her conservatorship to "sex trafficking" and told the judge that her dad should be locked up.
Everything Britney said was disturbing -- from her team allegedly putting her on lithium to being denied private therapy from home -- but her most shocking claim was that she has no control over her body.
Speaking candidly to the judge, Britney revealed she wants to get married and have a baby. She claimed Jamie is preventing her from doing so.
“I want to get married and have a baby,” she said during her emotional testimony. “I want [the IUD] taken out so I can start trying to have another baby. But this so-called team won’t let me go to the doctor to take it out because they don’t want me to have any more children.”
Britney also said she wants to sue her dad following the alleged mistreatment he allowed her to endure for over a decade.
The singer made it clear that she wants out of the conservatorship and to end Jamie's long reign over her life.
Celebrities have shown endless support to Britney following the hearing, including her ex-boyfriend Justin Timberlake and former nemesis Christina Aguilera.
As for her sister, Jamie Lynn Spears, she says she loves and "supports" Britney but doesn't care if the star moves to the rainforest and has babies. "It doesn't affect me," she said during an emotional video.