Cook pasta according to package directions; drain. In a large bowl, combine the pasta, chicken, tomato sauce, tomatoes, spinach, olives, onion, green pepper, basil and oregano. , Transfer to a 13x9-in. baking dish coated with cooking spray. Sprinkle with cheeses. Bake, uncovered, at 400° until heated through and cheese is melted. If desired, sprinkle with oregano or basil. Freeze option: Cool unbaked casserole; cover and freeze. To use, partially thaw in refrigerator overnight. Remove from refrigerator 30 minutes before baking. Preheat oven to 400°. Bake casserole as directed, increasing time as necessary to heat through and for a thermometer inserted in center to read 165°.