Prepare rice according to package directions, omitting salt and fat.
While rice cooks, combine hoisin, ketchup, and Sriracha in a small bowl.
Heat oil in a large nonstick skillet over medium-high heat. Add onion; sauté 3 minutes or until tender. Add ginger and remaining ingredients; sauté 6 minutes or until chicken is done. Stir in hoisin mixture; cook 1 minute, tossing to coat. Serve over rice.