"Kradam! That's both of them," Jamie joked with Access Hollywood's Nancy O'Dell. "Adamis!"
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Joking aside, Jamie — who got a chance to work with each of the finalists as one of this season's special guest mentors – said he thinks the title of "Idol" will go to the man who has been the frontrunner most of the season.
"Adam is gonna win, I believe," Jamie admitted.
However, the Oscar winner and platinum-selling artist said he sees nothing but big things ahead for Kris.
"For me, this is my opinion, that Kris dude, I guarantee you, he's got something special," Jamie told Nancy. "And if you notice, most of the people that don't win usually end up with crazy careers."
In fact, if Kris is looking for anyone to duet with, Jamie told the aspiring singer he's ready.
"I told him. I said, 'I'll do it right here with you,'" the actor recalled of his mentoring session with Kris. "Because the way his nuance is, he's not trying to win the contest – he was just giving you the real thing."
"He sang something and he looked in my eyes, I was like, 'Oh man!' you know. It was crazy. I said, 'Dude, you got something.'"
And while he was clearly impressed with Kris' singing chops, he did offer some advice to the "Idol" hopeful.
"I asked Kris what he wanted to do. He said, 'I want to do pop music.' And I told him there is no such thing as pop music," Jamie continued. "You do the music from your soul and then you hope it becomes popular."
The new "American Idol" will be crowned on May 20.
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