01 - Preheat oven to 400°F. Lightly grease a baking dish or line it with parchment paper.
02 - Pat the chicken thighs dry with paper towels and season both sides with salt and pepper.
03 - In a mixing bowl, combine panko breadcrumbs, grated Parmesan, parsley, rosemary, thyme, minced garlic, olive oil, salt, and black pepper. Stir until well mixed.
04 - Press the herb mixture firmly onto the skin side of each chicken thigh to form an even crust.
05 - Place the coated chicken thighs skin side up in the prepared baking dish. Bake for 30 to 35 minutes, or until the crust is golden and the chicken is cooked through, reaching an internal temperature of 165°F.
06 - While the chicken bakes, place a saucepan over medium heat. Melt the unsalted butter and sauté the minced garlic for about 1 minute, until aromatic.
07 - Pour in the chicken broth, bring to a simmer, and reduce by half. Stir in the heavy cream, Dijon mustard, and grated Parmesan. Simmer for 3 to 4 minutes until slightly thickened. Season with salt and pepper to taste.
08 - Transfer baked chicken thighs to a serving platter. Spoon the creamy garlic sauce over or around the chicken. Garnish with fresh herbs and lemon wedges if desired.