01 - Pat chicken thighs dry and season both sides with salt and black pepper.
02 - Heat olive oil in a large skillet over medium-high heat. Place chicken thighs skin-side down and sear until golden brown, about 5 to 7 minutes. Flip and cook for an additional 3 to 4 minutes. Remove from skillet and set aside.
03 - Discard excess fat, leaving approximately 1 tablespoon in the skillet. Melt butter over medium heat.
04 - Add sliced mushrooms to the skillet and cook for 4 to 5 minutes until browned and tender.
05 - Stir in minced garlic and thyme; sauté for 1 minute until fragrant.
06 - Pour in chicken broth while scraping the bottom of the skillet to release browned bits. Simmer for 2 minutes.
07 - Reduce heat and add heavy cream and Parmesan cheese. Simmer gently until sauce thickens slightly, about 3 minutes.
08 - Nestle chicken thighs, skin-side up, into the sauce along with any accumulated juices. Spoon sauce over the top.
09 - Cover skillet and simmer on low heat for 15 to 20 minutes until chicken reaches an internal temperature of 165°F.
10 - Sprinkle freshly chopped parsley over the finished dish before serving.