The former Saved by the Bell actor was named as one of the show's presenters alongside Khloe Kardashian earlier this week.
© PA Images
© Khloe Kardashian
He has now told HollywoodLife that he is excited about working with his co-star, who he described as his "favourite" Kardashian.
"I've known Khloe a long time, she's a sweetheart," he said. "I get along great with her and her family.
"She's got a great personality. I think she's ready for it."
Lopez, who claimed that Simon Cowell is his favourite judge, also described working on The X Factor USA as his "dream job", saying: "I am a big fan!"
Lopez and Kardashian will first appear on The X Factor USA with the opening live show, which airs November 1 on Fox.
Meanwhile, Lopez recently confirmed that his upcoming wedding to Courtney Mazza will be televised on TLC in December.
