Start by seasoning the chicken thighs generously with salt and black pepper on both sides. This helps build a strong flavor base right from the beginning. Let the chicken sit for a few minutes so the seasoning can absorb properly.
Heat olive oil in a large skillet over medium-high heat. Place the chicken skin-side down and cook until golden and crispy. Flip and cook the other side briefly, then remove from the pan and set aside.
In the same pan, add chopped onion and cook until soft and slightly golden. Stir in the minced garlic and cook for another minute until fragrant. This step creates the aromatic foundation of the sauce.
Pour in the chicken broth and stir well, scraping up any browned bits from the bottom. Add Dijon mustard, whole grain mustard, and smoked paprika. Mix everything together until the sauce starts to come together.
Lower the heat and pour in the heavy cream, stirring gently to combine. The sauce will become smooth and creamy. Allow it to simmer for a few minutes so the flavors blend beautifully.
Place the seared chicken back into the pan, nestling it into the sauce. Spoon some sauce over the top to coat it well. Cover and let it cook until the chicken is fully tender and cooked through.
Once done, sprinkle freshly chopped parsley over the dish. The fresh herbs add color and brightness. Serve hot with your favorite side dishes for a complete meal.