Cook Pasta: Bring a large pot of salted water to a rolling boil. Cook penne pasta until al dente according to package instructions (about 9-10 minutes). Reserve 1/2 cup of starchy pasta water, drain pasta, and set aside.
Season & Blacken Chicken: Toss sliced chicken breast strips with 1 tablespoon of Cajun seasoning and smoked paprika. Heat 1 tablespoon olive oil in a large deep skillet over medium-high heat. Sear chicken for 5-6 minutes until deeply golden-brown and cooked through. Transfer to a clean plate.
Crisp Halal Sausage: In the same hot skillet, add sliced halal smoked sausage coins. Sauté for 3-4 minutes until edges are deliciously crisp and caramelized. Transfer to the plate with chicken.
Sauté Aromatics: Melt butter in the skillet drippings. Add sliced bell peppers and diced onion, cooking for 3-4 minutes until tender-crisp. Add minced garlic and remaining 1 tablespoon Cajun seasoning, stirring for 60 seconds until fragrant.
Simmer Velvety Cajun Cream Sauce: Pour in halal chicken bone broth to deglaze the bottom of the pan, scraping up all caramelized fond bits. Pour in heavy cream and bring to a gentle simmer for 3 minutes until slightly thickened. Reduce heat to low and whisk in freshly grated Parmesan cheese until silky and smooth.
Toss & Coat: Return cooked chicken, sausage, and drained penne into the luscious cream sauce. Toss gently over low heat for 2 minutes until every ridged pasta tube is evenly coated (add a splash of reserved pasta water if you prefer a looser sauce).
Garnish & Serve: Garnish generously with sliced green onions and chopped fresh parsley. Serve immediately piping hot with extra grated Parmesan and warm garlic bread.