NEW YORK — “American Idol” executive producer Nigel Lythgoe says don’t expect any major changes when the hit Fox TV show returns in January after undergoing an extensive makeover last season.

Lythgoe, who helped transform Britain’s “Pop Idol” into the American TV juggernaut in 2002, returned as executive producer last season to usher in the post-Simon Cowell era. That ended a two-year hiatus that allowed him to focus on “So You Think You Can Dance,” which he produces and helps judge.

For the 10th “American Idol” season, Lythgoe introduced new judges, Jennifer Lopez and Steven Tyler, to join holdover Randy Jackson. Veteran music producer Jimmy Iovine, chairman of Interscope-Geffen-A&M, was brought in as an in-house mentor for the contestants. All of them are back for Season 11, Lythgoe said.

“I think we made a lot of tweaks last year,” Lythgoe said. “I’m not sure that we want to make too many more tweaks this year.”

Lythgoe said the most significant change introduced last year had nothing to do with the judges: It was a decision to avoid those fish-out-of-water moments that forced very talented singers to sing in styles that didn’t suit them.