New Delhi, July 29 -- If you've ever fumbled when asked, "Do you have any questions for me?" at the end of a job interview, Denny's CEO Kelli Valade says that moment might have revealed more about you than you think.

In a recent interview with Fortune, Valade opened up about the subtle but effective ways she evaluates candidates, and how one simple question often helps her spot red flags early in the hiring process.

"It helps me see whether someone has done their homework, whether they're genuinely interested in the role, or just going through the motions," Valade explained.

The 55-year-old CEO of the popular American restaurant chain said she pays close attention not just to what candidates say, but how they reflect on themselves. One...