Season all sides of the chicken breasts and bake them about 30 minutes at 350 degrees.
Cut the chicken into small pieces.
Cook and drain the pasta according to the directions.
In a very large bowl, add the chicken, pasta, spinach, cucumber, tomato, and Feta cheese.
Toss the salad with about 8 ounces of Greek Salad Dressing.
Add additional Greek seasoning to taste. I added about one teaspoon.
Cover and refrigerate.