In wok, heat remaining 2 tablespoons oil over medium-high heat. Add eggs; cook 2 to 3 minutes, stirring until scrambled and firm. Add softened noodles, sauce and chicken. Cook 2 minutes. Add bean sprouts; cook 2 to 3 minutes longer, stirring frequently, until noodles are tender and sprouts are no longer crisp. If mixture seems dry, stir in 1/4 cup water and cook until thoroughly heated.