Boil pasta in salted water. Cook until tender. Drain and set aside.
Season the Proteins
Season shrimp and chicken with Cajun seasoning, paprika, salt, and pepper.
Heat the Skillet
Heat olive oil and butter in a large skillet over medium heat.
Cook the Chicken
Add chicken slices to skillet. Cook until golden and fully cooked.
Cook the Sausage
Add sliced sausage. Cook until lightly browned and fragrant.
Cook the Shrimp
Add shrimp to skillet. Cook until pink and curled. Remove everything and set aside.
Sauté Vegetables
Add onion and bell pepper to skillet. Cook until soft and slightly sweet.
Add Garlic
Add minced garlic. Stir for one minute until fragrant.
Make the Sauce
Pour in chicken broth and heavy cream. Stir and bring to gentle simmer.
Add Cheese and Spice
Add Parmesan cheese and red pepper flakes. Stir until sauce thickens.
Combine Everything
Return chicken, sausage, shrimp, and pasta to skillet. Toss gently.
Finish and Garnish
Cook two more minutes. Garnish with fresh parsley before serving.
Notes
Use fresh shrimp for best flavor. Do not overcook the shrimp. Adjust Cajun seasoning to your spice level. Use heavy cream for a rich sauce. Serve pasta hot for best texture.