Pat the chicken thighs dry with paper towels and place them in a baking dish.
In a small bowl, whisk together olive oil, melted butter, garlic, lemon juice, lemon zest, oregano, thyme, salt, pepper, paprika, and red pepper flakes.
Pour the mixture over the chicken, coating each piece well.
Bake for 35–40 minutes or until the skin is golden brown and crispy, and the internal temperature reaches 165°F.
Let the chicken rest for a few minutes, then garnish with fresh parsley and serve with lemon slices.