In 12-inch nonstick skillet, heat oil over medium-high heat. Add carrots, onion and chicken; cook 6 to 7 minutes, stirring frequently, until chicken is no longer pink in center and vegetables are tender.
Stir in water and vermicelli. Heat to boiling. Cover; cook 3 minutes.
Stir in peas and stir-fry sauce. Cook about 2 minutes, stirring frequently, until peas are thoroughly heated. Remove from heat. Stir in garlic salt.