Heat 1 tablespoon oil in a large nonstick skillet over high heat. Add chicken; cook 1 minute; stir and cook 1 minute more or until chicken is almost cooked through. Remove chicken to plate.Advertisement
Add remaining oil to skillet. Add asparagus, sweet pepper, onion, ginger, garlic, sesame oil and pepper flakes; cook, stirring occasionally, 5 minutes. Add broth, soy and hoisin sauce. Cook 4 minutes. Add chicken.
Combine cornstarch and water in small dish; add to skillet. Cook until heated through and thickened, about 2 minutes. Serve with cooked rice if you wish.