1Cook pasta according to package directions and drain.
Stir together chicken and next six ingredients.
Cut pasta shells lengthwise through 1 side. Spoon about 1/2 cup of the chicken mixture into each shell, gently pressing cut sides together.
2Place cut sides down, in a lightly greased 13x9 baking dish and pour Roasted Red Pepper Sauce evenly over shells. Bake Uncovered at 350 degrees for 25-30 minutes or until thoroughly heated.
3Roasted Red Bell Pepper Sauce:
Combine the jars or red bell peppers that have been drained with the Alfredo sauce and the Parmesan cheese in a blender until smooth. Yields 3 1/2 cups of sauce.