Preheat oven to 400°F. Line a rimmed baking sheet with foil and heat the pan in the oven while it preheats.
Mix olive oil and all spices in a bowl to form a paste.
Coat chicken thighs with the seasoning paste, rubbing it into the skin.
Place chicken on the preheated pan, dot with butter, and bake for 20 minutes. Baste with pan juices, then bake for an additional 10-15 minutes until internal temperature reaches 165°F.
Notes
For crispy skin, ensure the baking pan is preheated and pat the chicken dry before seasoning.