Preheat your oven to 425°F (220°C).
Pat the chicken thighs dry with paper towels to ensure a crispy skin.
In a bowl, mix together the olive oil, garlic powder, onion powder, smoked paprika, dried thyme, salt, and black pepper.
Rub the spice mixture evenly over each chicken thigh, ensuring to coat under the skin for extra flavor.
Place the chicken thighs skin-side up in a baking dish or on a sheet pan, leaving some space between each piece for even cooking.
Bake in the preheated oven for 30 minutes, or until the internal temperature reaches 165°F (75°C) and the skin is golden brown and crispy.
Once cooked, remove from the oven and let the chicken rest for 5 minutes covered loosely with aluminum foil.
Serve hot, garnished with fresh herbs if desired.
For extra crispy skin, you can place the chicken under the broiler for an additional 2-3 minutes after baking.