Barreling into the Hollywood Bowl this weekend before more tour dates overseas, Jack Johnson’s good vibes and connection to community extends well beyond the stage. The affable troubadour has donated proceeds from entire tours to charity, supported disaster relief efforts, and now, through one of several nonprofits he and his wife, Kim, support, is helping feed Oʻahu while teaching the next generation how to care for the planet. The Johnsons’ environmental education nonprofit, Kōkua Hawaiʻi Foundation , recently announced that its eight-acre Kōkua Learning Farm has harvested more than 40,000 pounds of produce and welcomed more than 2,200 students since opening in 2019.…