In a large mixing bowl, toss together the coleslaw mix, sunflower seeds, crushed Ramen noodles, and sliced green onions. (Note: to crush the Ramen noodles, add them to a plastic baggie and run over them with a large wooden rolling pin.)
In a small resealable container, add the canola oil, sesame oil, white vinegar and sugar. Close with tight fitting lid and shake. Pour over the salad and mix well. Add chicken, if desired. Season with salt and pepper to taste. Chill until ready to serve, or serve at room temp.