1. Cook the penne pasta according to package instructions. Drain and set aside.
2. In a large skillet, heat olive oil over medium-high heat. Add the chicken pieces and cook until browned on all sides, about 5-7 minutes.
3. Add the sliced sausage to the skillet, cooking until it begins to brown, about 3 minutes.
4. Stir in the shrimp and cook until they turn pink, approximately 2-3 minutes. Remove the meats from the skillet and set aside.
5. In the same skillet, add the bell pepper, onion, and garlic. Sauté until the vegetables are tender, around 5 minutes.
6. Sprinkle the Cajun seasoning over the vegetables and stir to coat evenly.
7. Add the diced tomatoes and chicken broth, stirring to combine. Bring the mixture to a gentle simmer.
8. Return the chicken, sausage, and shrimp to the skillet. Stir in the heavy cream and allow the sauce to thicken slightly, about 5 minutes.
9. Add the cooked pasta to the skillet and toss everything together until the pasta is well-coated with the sauce.
10. Season with salt and pepper to taste. Serve hot, garnished with freshly chopped parsley.

This recipe thrives on patience and care. Remember, Mama Lou always said, “Cooking isn’t just about the ingredients; it’s about the love you put into it.”