The Englishman had a hernia operation in January and is now fully match fit.
Vardy was excellent as Leicester beat Sheffield United 5-0 at the weekend.
Rodgers said, per Sky Sports: "You know when he is at his best when he is moving and threatening the backline. He may not have scored but he was very influential.
"You can see Kelechi's [Iheanacho] combination with Jamie is very good. Jamie has always had that, it just gets overlooked because we focus on his goals. He has always been a creator also.
"Those two passes he has made for Kel's goals were absolutely brilliant. He had other chances and was in there, he looked a threat all game. He is more than goals and gives so much to the game."
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