Cook pasta according to package directions. In a small bowl, whisk cornstarch and 1 tablespoon soy sauce until smooth; stir in 1 tablespoon sesame oil. Transfer to a large resealable plastic bag. Add chicken; seal bag and turn to coat. Let stand for 10 minutes. In a small bowl, combine the vinegar, sugar, remaining soy sauce and sesame oil; set aside. In a large nonstick skillet or wok, stir-fry chicken in canola oil until no longer pink. Remove to a platter and keep warm. In the same skillet, stir-fry peas and carrots for 5 minutes. Add the green onions, ginger and pepper flakes. Cook and stir until vegetables are crisp-tender. Return chicken to pan. Add soy sauce mixture; drain pasta; Add to skillet; toss until combined.