Cook pasta according to package directions; drain, rinse and drain thoroughly. Meanwhile, coat chicken with 1 tablespoon stir-fry sauce and 2 teaspoons soy sauce; let stand 15 minutes. Stir-fry chicken in 1 tablespoon hot oil in wok or large skillet over high heat 3 minutes, or until done; remove. Heat remaining 1 Tbsp. oil in same pan. Add carrot; stir-fry 1 minute. Add celery, onion and garlic; stir-fry 3 minutes longer. Stir in bean sprouts, chicken, pasta, remaining 1/3 cup stir-fry sauce, 2 tsp. soy sauce and pepper. Cook, stirring, until all ingredients are coated with sauce and pasta is heated through. Remove from heat; stir in sesame oil.