01 - Pat chicken thighs dry with paper towels. Season both sides evenly with kosher salt and ground black pepper.
02 - Heat a large skillet over medium-high heat. Place chicken thighs skin-side down and sear for 6 to 7 minutes until the skin turns crisp and golden. Flip and cook for an additional 5 minutes. Remove chicken and set aside.
03 - Reduce heat to medium. Add unsalted butter to the same skillet and cook, swirling occasionally, until the butter foams and turns golden brown with a nutty aroma, about 2 to 3 minutes.
04 - Add minced garlic, thyme, rosemary, and red pepper flakes if desired. Sauté for 1 minute until fragrant.
05 - Stir in lemon juice and chicken broth, scraping any browned bits from the bottom of the pan.
06 - Return chicken thighs to the skillet skin-side up. Spoon some sauce over the chicken pieces. Reduce heat to low, cover, and simmer for 12 to 15 minutes until chicken is cooked through (internal temperature should reach 165°F).
07 - Uncover and simmer for 2 to 3 minutes more to thicken the sauce, if preferred.
08 - Finish with chopped parsley and lemon wedges. Serve immediately.