Sprinkle sliced chicken with Cajun seasoning, set aside.
Melt butter in a large skillet, over medium-high heat.
Add chicken, stirring occasionally, saute until cooked through. Remove from pan and set aside.
Add bell pepper and celery and cook until tender.
Add garlic and cook until fragrant.
Stir in paprika, salt, and pepper.
Add chicken broth, cream and tomato sauce and whisk.
Bring to a boil then reduce heat to a simmer. Simmer for several minutes until the mixture has thickened slightly.
Stir in cheese, stirring until melted.
Add chicken to sauce and stir to coat.
Serve over riced cauliflower, if desired. Sprinkle each serving with chopped parsley.