Melt butter and then stir in lemon juice. Place chicken in baking pan and season with pepper and garlic salt. Pour butter and lemon over the top. Bake at 375 for 45 min.
Cook pasta as directed. Drain the liquid from the pan the chicken was cooked in. In a large skillet, heat chicken drippings and add the chicken broth, cream and onion. Bring to a light boil and add the pasta and stir in the cheese. Salt and pepper to taste.