In a small or shallow bowl, combine the chicken thighs with the sauce from the chipotle in adobo sauce, chipotle powder, lime juice, garlic powder, onion salt, and oregano with tablespoon of olive oil.
Cover and set aside to marinate for 30 minutes or more.
On medium heat, heat up your skillet (preferably cast iron) and melt the butter and the rest of the olive oil before adding in the chicken thighs, smooth side down and then cook for 5 minutes. Flip and continue to cook for 6 to 7 minutes, or until cooked through. Do not overcrowd the pan, cook in two batches if necessary.