Chicken Tarragon Salad

Name: Chicken Tarragon Salad
Ingredients: 1/2 cup non-fat mayonnaise (recommended: Best Foods); 1/4 cup non-fat plain yogurt (recommended: Horizon); 1 teaspoon poppy seeds (recommended: McCormick); 1 teaspoon finely chopped fresh tarragon leaves; 2 (7-ounce) cans cooked chunk chicken breast meat, rinsed and drained (recommended: Tyson); 1 cup red seedless grapes, cut in 1/2; 2 ribs celery, chopped; 1/4 cup chopped walnuts and/or pecans (recommended: Planters); 6 cups spring mix lettuce (recommended: Ready Pac)