Each serving equals one veggie serving.
Place chicken in a small bowl. Add water 1 tablespoon at a time, working in with hands until water is absorbed into chicken. Sprinkle cornstarch over chicken and work in with hands to coat all pieces.
Blanch vegetables in boiling water until crisp-tender, 2 to 3 minutes; drain and set aside. Heat nonstick wok or large nonstick skillet on high for 2 minutes. Add vegetable oil and swirl to coat pan (oil should smoke slightly).
Add chicken, garlic, and ginger. Stir fry 3 minutes. Add sesame garlic sauce. Stir fry 2 minutes. Add pepper and vegetables; stir fry to heat through, 30 seconds.
Remove from pan. Garnish with sesame seeds.