Layered Tortellini and Pesto Chicken Salad

This recipe is actually from my friend Brenda, who brought it to me when I broke my leg, it lasted all week for lunches and is such a beautiful salad to bring to potluck things!

 Layer in order given:
 5 cups torn romaine lettuce
 1 1/2 cups julienne carrots
 2 cups cooked/grilled chicken
1 cup thawed frozen peas
 1 pkg tortellini, cooked
 1 red bell pepper, chopped

 Dressing: 1/2 cup reduced fat mayonnaise 1/2 cup basil pesto 1/4 cup buttermilk For Sweetie Pie's Baptism, I did make a little extra, more peppers and peas and doubled the dressing to make sure there was enough.