The 27-year-old has scored eight goals for the Foxes this season, helping them establish an eight-point lead at the top of the Championship table.
"Vardy did what he has been doing all season - occupying a back four, working hard and converting chances," PA quotes Pearson as saying.
"It is a big plus for the side. His contribution has always been valued by his peers and this season his conversion rate has been better. His contribution was very good."
Leicester take on Birmingham City at St Andrew's on Tuesday.