Vardy has endured a recent run of just one goal in 10 games.
Rodgers said: “It happens, part of it is down to him working his way back in after injury.
"But Jamie is ready to make an impact in the final part of the season.
“He's got that mind-set where he just looks to the next game.
"I'd be pretty confident before the end of the season he'll have those 100 goals."