Jambalaya Spaghetti

Name: Jambalaya Spaghetti
Ingredients: 3⁄4 lb spaghetti; 1 boneless skinless chicken breast half; 1 chorizo sausage, sliced and diced (1/4 lb); 3 tablespoons olive oil; 1 onion, minced; 1 yellow bell pepper, seeded, diced; 2 celery ribs, minced; 2 garlic cloves, finely chopped; 1 teaspoon dry oregano; 1 teaspoon paprika; 1 pinch cayenne pepper (obtional); 3 tablespoons lemon juice; 3 cups homemade tomato sauce or 3 cups store-bought tomato sauce; 3⁄4 lb shrimp, shelled and devained; 1⁄4 cup Italian parsley, chopped; salt and pepper