Cook noodles according to package directions. Remove noodles to serving bowl. In same pot, bring broth to a boil, then add vegetables, tofu and chicken to broth; break egg into pot; cook on medium low for 2-3 minutes, until vegetables are just tender and chicken is cooked through. Pour into bowl over ramen noodles. Drizzle a little soy sauce and sesame oil on top, if desired.