01 - Pat the chicken thighs dry with paper towels. Season both sides generously with salt, black pepper, and paprika.
02 - Heat olive oil in a large skillet or Dutch oven over medium-high heat. Place the chicken thighs skin-side down and sear for 4–5 minutes per side until deeply golden brown. Transfer to a plate and set aside.
03 - Reduce heat to medium. Melt the butter in the same pan. Add the onion, celery, and bell pepper, cooking for 4–5 minutes until softened. Stir in the minced garlic and cook for 1 additional minute until fragrant.
04 - Sprinkle the flour over the sautéed vegetables and stir continuously for 1 minute to cook out the raw flour taste and form a light roux.
05 - Gradually whisk in the chicken broth followed by the milk or cream, stirring constantly to prevent lumps. Add the dried thyme and cayenne pepper if using. Bring the mixture to a gentle simmer.
06 - Stir the rice into the sauce until evenly distributed. Nestle the browned chicken thighs on top, skin-side up, pressing them slightly into the liquid.
07 - Cover with a tight-fitting lid, reduce heat to low, and cook for 25–30 minutes until the rice is tender and the chicken reaches an internal temperature of 165°F.
08 - Remove from heat and let rest, covered, for 5 minutes. Garnish with fresh chopped parsley and serve directly from the skillet.