01 - Preheat oven to 400°F. Position the rack in the center.
02 - Pat chicken thighs thoroughly dry with paper towels. Combine salt, pepper, smoked paprika, dried thyme, and dried basil in a small bowl. Rub the seasoning blend evenly over all surfaces of each thigh.
03 - Melt butter in a large oven-safe skillet over medium-high heat. Place chicken thighs skin side down and sear for 3 to 4 minutes until the skin turns golden brown and crisp. Flip each thigh and sear the opposite side for 2 minutes. Transfer chicken to a plate and set aside.
04 - Reduce heat to medium. Add the chopped onion to the same skillet and sauté for 2 minutes until softened. Add minced garlic and cook for 1 minute until fragrant, stirring constantly to prevent scorching.
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 begins to thicken slightly, about 2 minutes.
06 - Nestle the seared chicken thighs back into the skillet, skin side up. Spoon several tablespoons of the cream sauce over the top of each thigh.
07 - Transfer the uncovered skillet to the preheated oven. Bake for 25 to 30 minutes until the chicken reaches an internal temperature of 165°F and the sauce is bubbling around the edges.
08 - Remove from the oven and let rest for 2 minutes. Sprinkle with chopped fresh parsley and serve immediately, spooning extra sauce from the skillet over each portion.