Rob Kardashian is not comfortable in his own skin, after gaining more than 40 pounds following his split with British singer Rita Ora late last year.

During an exclusive interview Sunday night with television personality Ryan Seacrest, the 26-year-old opened up about his weight battle.

“Every time I hop in the shower and see myself naked, I cry, because my p---- looks so small now. The upside is every time you lose 10 pounds, you gain an inch on your p----.”

While sitting at a dinner table with his family during the segment that aired on E!, he even asked older sister Khloe to move the French fries away from him.

He has been on a mission to lose weight after putting on the weight once his relationship with Ora went south.

In December, Kardashian went on a Twitter rant about Ora, writing, “She cheated on me with nearly 20 dudes while we were together; I wonder how many she will sleep with now that we apart? But I mean 20?!!! [sic]” But Ora revealed in March that she never even thought of Kardashian as her boyfriend.

At his birthday party March 16 in Las Vegas, Kardashian told Us Weekly that he is slowly losing the weight. “I lost 5 to 7 pounds last week. I’m trying to lose 40. It’s a little journey, but it’s good.”

Kardashian has been working out with rapper the Game and has frequently been photographed by the paparazzi on hikes.

“We’ve started running and doing our own little workout; it’s good” he said. “I’ll exercise with my own trainer at 8 in the morning before all that.”

“I’m like 240 pounds right now, probably 235 pounds.”