The victims told police they were stopped at a red light when another car pulled up next to them and began shooting.
29-year-old Chris was hit in the shoulder ... and another person in the car was also hit and died from his wounds. We're told Chris was taken to a nearby hospital -- and cops say he's in stable condition.
Sources close to Johnson tell us the former NJ Jets and Tennessee Titans player was returning from a concert and was heading to a recording studio when he was shot.
Johnson posted a picture of himself and a friend together before the show.
Chris had been in L.A. training at Jay Glazer's Unbreakable gym but went home for the weekend to hang with friends and family.