Adrian Kempe scored twice, and Joel Armia had a goal and an assist for the Kings (30-26-19), who are 2-3-4 in their past nine. Kuemper made 30 saves.
“It was a tale of two games completely,” Los Angeles interim coach D.J. Smith said. “They dominated the first half, and I thought we took it to them in the second half.”
Nashville nearly capitalized early following a pregame ceremony honoring Kings captain Anze Kopitar for becoming the franchise's all-time points leader, having broken Marcel Dionne’s record of 1,307 on March 14.
L’Heureux appeared to give the Predators a 1-0 lead just 18 seconds into the first period. Officials determined he hit the puck with a high stick before it went into the net and video review confirmed the call on the ice of no goal.
Forsberg did put Nashville up 1-0 at 52 seconds, putting a sharp-angle wrist shot on net from the left corner that snuck under Kuemper's right pad.
L'Heureux made it 2-0 at 3:47 after Brady Skjei's shot from the left point deflected off Los Angeles defenseman Brandt Clarke in front. L'Heureux gathered the puck and tucked it around Kuemper into an open net after a forehand-backhand deke.
Predators forward Ryan O'Reilly was awarded a penalty shot at 19:51 because Kuemper threw his stick to try to break up a 2-on-1 short-handed rush after coming out of his crease in an attempt to keep the puck away from Tyson Jost. Kuemper then stopped O’Reilly’s attempt with a blocker save.