The Kings confirmed Pearson's injury on their website Sunday.
Pearson is the Kings' second-leading goal-scorer with 12 in 42 games this season.
Pearson was one of six rookies selected for the skills competition at the NHL All-Star weekend next month. He is still technically a rookie despite playing a significant role last summer during the Kings' run to their second Stanley Cup title in three seasons.
The Kings also faced the Jets without forward Tyler Toffoli, who is out indefinitely with mononucleosis.