Simon Cowell’s strange behavior on AGT Season 18: Why is the judge not speaking?

The music mogul had a health issue while filming.

Simon Cowell has long been known for his quick tongue and caustic remarks, so it was surprising to see the 63-year-old appear more subdued than usual during season 18 of American Idol.

Simon remained silent while co-stars Heidi Klum, Sofia Vergara, and Howie Mandel discussed tryouts, but not for lack of interest.

Simon hasn’t said much during AGT season 18 due to a medical issue, as he detailed in an interview with USA Today.