01 - Preheat oven to 400°F. Lightly grease a baking dish or line with parchment paper.
02 - Pat chicken thighs dry with paper towels and season generously with salt and pepper on all sides.
03 - In a mixing bowl, combine panko breadcrumbs, grated Parmesan, chopped parsley, rosemary, thyme, minced garlic, olive oil, salt, and black pepper. Mix until evenly incorporated.
04 - Press the herb mixture firmly onto the skin side of each chicken thigh, building an even, generous crust.
05 - Place the coated chicken thighs in the prepared baking dish, skin side up, leaving space between each piece for even browning.
06 - Bake for 30 to 35 minutes until the crust turns deep golden and the internal temperature reaches 165°F at the thickest part of the thigh.
07 - While the chicken bakes, melt butter in a saucepan over medium heat. Add minced garlic and sauté for 1 minute until fragrant. Pour in chicken broth, bring to a simmer, and reduce by half.
08 - Stir in heavy cream, Dijon mustard, and Parmesan cheese. Simmer for 3 to 4 minutes until the sauce thickens slightly. Season with salt and pepper to taste.
09 - Transfer the baked chicken thighs to a serving platter. Spoon the creamy garlic sauce over and around the chicken. Garnish with fresh chopped herbs and lemon wedges if desired.