Lambert, 30, is reportedly among those being considered for a judging role if Jennifer Lopez doesn't return, according to an E! Online report.
The season 8 singer, who finished as runner-up to Kris Allen in probably the biggest Idol upset ever, is one of the show's biggest stars, and has the outsize personality that would seem perfect for television.
"Idol has an amazing history of introducing great musical talent, and I was very fortunate to have had the Idol stage play a big part in my career," Lambert says. "If Idol wants to talk to me about judging, I'd be more than flattered to have that conversation."
Lambert has also spoken out in the past about what kind of judging approach is most helpful to the show's contestants. "Having a judge up there that will help build you up and give you positive reinforcement is almost just as powerful as the critiques," he told PEOPLE in 2011 when Lopez and Steven Tyler joined the panel.