1/2 pound whole wheat angel hair pasta3 tablespoons hoisin sauce1/4 cup chicken broth2 tablespoons soy sauce2 teaspoons toasted sesame oil1 teaspoon cornstarch2 tablespoons vegetable oil1 tablespoon finely chopped fresh ginger1 medium onion, halved lengthwise and thinly sliced4 to 5 shiitake mushroom caps, thinly sliced1/2 cup thinly sliced carrots1 cup broccoli florets1 cup sugar snap pea pods, halved and to 1 1/4 pounds skinless, boneless chicken