Chicken Pasta Salad with Sunflower Seed Dressing

The dressing is what makes this salad stand out.  It gives it such a nice, unique flavor.  Enjoy!
For salad:
-16 oz garden rotini pasta
-3 chicken breasts
-salt and pepper
-6 green onions, cleaned and chopped
-baby spinach
For dressing:
-1/4 cup sunflower seeds
-1/2 cup extra virgin olive oil
-1/3 cup soy sauce
-3 Tbs sugar
-1/4 tsp salt
-1/4 tsp pepper
Cook pasta according to package directions.  Once done, drain, rinse with cold water, then drain again.  Place into large bowl.
Meanwhile, cut the chicken into chunks.  Season with salt and pepper and cook until brown.  Add to the pasta, along with the green onions and mix.
In your blender, mix all dressing ingredients until smooth.
Place some baby spinach into your salad bowl.  Add some of the pasta-chicken mixture.  Drizzle with dressing, mix and enjoy!