Heat olive oil in a large skillet over medium heat. Add the chicken sausage and cook until browned, about 5 minutes. Remove and set aside.
In the same skillet, add the chicken pieces. Season lightly with salt and pepper, then cook until golden and cooked through. Remove and set aside with sausage.
Add onion, garlic, and bell peppers to the skillet. Sauté until softened and fragrant, about 4–5 minutes.
Stir in the orzo pasta and toast it for 1–2 minutes before pouring in the chicken broth.
Mix in Cajun seasoning, smoked paprika, and cayenne pepper. Bring to a simmer, then reduce heat and cook until orzo is tender, about 10 minutes, stirring occasionally.
Return chicken and sausage to the skillet. Stir in the heavy cream and Parmesan cheese until creamy and combined.
Taste and adjust seasoning as needed. Garnish with parsley before serving.