In a mixing bowl, whisk together the heavy cream, chicken broth, minced garlic, Dijon mustard, dried thyme, paprika, salt, and pepper until well combined.
Place the chicken thighs in a baking dish, skin side up. Pour the creamy mixture over the chicken, ensuring the thighs are well coated.
Sprinkle the chopped spinach evenly over the top, then gently push it into the sauce.
Sprinkle the grated Parmesan cheese on top of the chicken and sauce.
Bake in the preheated oven for 35-40 minutes, or until the chicken is cooked through and the skin is golden and crispy.
Remove from the oven and let it rest for about 5 minutes before serving.
Notes
Serve with steamed vegetables or mashed potatoes for a complete meal.