Preheat the oven to 350 degrees F. While the pasta is still very hot combine pasta, cheese and ham into a large bowl. In a separate bowl combine the eggs, sour cream, butter, salt and milk. Stir into the macaroni mixture. Lastly, fold in the roasted red pepper. Pour mixture into a prepared casserole dish and bake for 30-45 minutes. Top with additional cheese if desired.