01 - Preheat oven to 400°F. Position the rack in the center of the oven.
02 - Pat the chicken thighs dry with paper towels. Combine salt, pepper, smoked paprika, dried thyme, and dried basil in a small bowl. Season all sides of each thigh evenly with the spice mixture.
03 - Melt the butter in a large oven-safe skillet over medium-high heat. Place the chicken thighs skin side down and sear for 3–4 minutes until the skin is golden brown and crisp. Flip and sear the opposite side for 2 minutes. Transfer the chicken to a plate and set aside.
04 - In the same skillet, add the chopped onion and sauté for 2 minutes until softened. Add the minced garlic and cook for 1 minute until fragrant, stirring frequently to prevent burning.
05 - Pour in the chicken broth, scraping up any browned bits from the bottom of the pan. Stir in the heavy cream and grated Parmesan cheese. Continue stirring until the sauce is smooth and slightly thickened, about 2 minutes.
06 - Place the chicken thighs back into the skillet, skin side up, nestling them into the sauce. Spoon some of the cream sauce over the top of each thigh.
07 - Transfer the skillet to the preheated oven. Bake uncovered for 25–30 minutes, until the chicken reaches an internal temperature of 165°F and the sauce is bubbly and golden around the edges.
08 - Remove from the oven and let rest for 2–3 minutes. Garnish with freshly chopped parsley and serve immediately.