Cook 6 ounces uncooked pasta al dente - about 2 minutes less than the instructions on the package. Drain and rinse under cold water.
Chop 1/2 cup celery, 1/4 cup onion, 1/4 cup bell pepper. 1 1/2 tablespoons herbs and 3/4 cup cooked chicken and place into a mixing bowl.
In a small bowl or jar, combine the 1/2 cup Greek yogurt, 2 tablespoons mayonnaise and 1 tablespoon White balsamic vinegar and pour it over the salad. Stir to combine.