Rob was spotted going for a late-night fast-food run on Wednesday, the now rarely-seen reality star hitting up an In-N-Out Burger in Woodland Hills, Calif.
The 28-year-old Keeping Up With the Kardashians star wasn't alone, bringing two friends along with him. They ate in Rob's white Range Rover at about 11 p.m., before heading back to Rob's friend's place just after midnight.
While Rob hasn't appeared on this season of Keeping Up With the Kardashians, on an episode in April, his mother, Kris Jenner, claimed that he had gained 100 pounds in the last year alone. "I feel like if I don't help him do something drastic, that he's gonna die," she said through tears, while discussing his problems with a life coach.
In an interview with Today's Matt Lauer late last month, Kim Kardashian called her brother's struggles "a phase."
"I think he's just going through a phase where he's not comfortable in his own skin," she said. "He is working really hard to get back to where he really wants to be."
Rob has struggled with his weight gain since 2013, and admitted his insecurities on an episode of Keeping Up With the Kardashians.
"I flaked on Greece," Rob told his former brother-in-law Lamar Odom about not going on the Kardashian family vacation in April 2013. "I was just not feeling myself, like, gaining a bunch of weight. It's just frustrating to me, that, like, I'm not happy going out if I'm not in good shape, you know what I mean? Within the next six months if I don't get this together then I won't want to, like, hang around everybody, and I want to."
"I totally understand that he wouldn't want to see a lot of people if he was feeling uncomfortable and you can only pray and wish that someone would not miss out on more memories in life, because life is about memories," she told Bravo's Andy Cohen.