01 - Season chicken breasts evenly with salt, pepper, and paprika on both sides.
02 - Heat olive oil in large skillet over medium-high heat. Sear chicken 3–4 minutes per side until golden brown. Remove and set aside.
03 - Reduce heat to medium. Add butter to skillet. Sauté onion and mushrooms 3–4 minutes until softened. Add garlic and cook 30 seconds until fragrant.
04 - Stir flour into skillet and cook 1 minute. Gradually whisk in chicken broth, milk, and heavy cream until smooth.
05 - Add thyme, parsley, salt, and pepper. Simmer 2–3 minutes, stirring frequently, until slightly thickened. Stir in Parmesan until melted.
06 - Return chicken to skillet, nestling into sauce. Cover and cook over low heat 15–20 minutes until chicken reaches 165°F internally.
07 - Rinse rice under cold water until clear. Bring water or broth and salt to boil in saucepan. Add rice, cover, reduce heat to low, and simmer 15–18 minutes until tender. Remove from heat and let stand covered 5 minutes. Fluff with fork.
08 - Portion rice onto plates, top with chicken breast, and spoon creamy sauce over entire dish.