01 - Preheat oven to 400°F. Position rack in the center of the oven.
02 - Pat the chicken thighs thoroughly dry with paper towels. Combine salt, black 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 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 is deeply golden and crisp. Flip each piece 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. Stir in the minced garlic and cook for 1 minute until fragrant, being careful not to let it brown.
05 - Pour in the chicken broth, scraping up any browned bits from the bottom of the pan. Add the heavy cream and grated Parmesan cheese, stirring constantly until the sauce is smooth and has slightly thickened, about 2 minutes.
06 - Return the chicken thighs to the skillet, arranging them skin side up. Spoon some of the cream sauce over the top of each piece. Transfer the skillet to the preheated oven and bake uncovered for 25 to 30 minutes, until the internal temperature of the chicken reaches 165°F and the sauce is bubbly.
07 - Remove from the oven and let rest for 2 to 3 minutes. Sprinkle generously with fresh chopped parsley and serve immediately while hot.