SPOILER ALERT: The following story contains plot details from Season 8 of “The Chi,” now streaming on Paramount+ In the eighth and final season of Lena Waithe’s long-running drama, “The Chi,” legendary actress Lela Rochon steps onto the scene. The “Waiting to Exhale” alum first appears in Episode 6, “When Truth Thaws,” as Vivian, a luxury wedding planner who is hired to orchestrate Emmett (Jacob Latimore) and Keisha’s (Birgundi Baker) forthcoming nuptials.