Preheat your oven to 400°F (200°C).
In a mixing bowl, combine melted butter, lemon juice, lemon zest, minced garlic, oregano, thyme, salt, black pepper, and red pepper flakes. Whisk until well combined.
Place the chicken thighs in a baking dish and pour the lemon butter mixture over the chicken, ensuring each piece is well coated.
Bake in the preheated oven for 25-30 minutes, or until the chicken reaches an internal temperature of 165°F (75°C) and is golden brown.
Remove from the oven and let the chicken rest for 5 minutes before serving. Garnish with chopped fresh parsley.