Place an oven rack in the center of the oven. Heat the oven to 400℉.
Pat the chicken thighs with a paper towel to remove moisture from the surface. Season with salt and pepper.
1 lb boneless skinless chicken thighs, 1 tsp salt, ½ tsp pepper
Heat a large cast iron skillet over medium heat. Add the chicken thighs to the skillet, making sure not to crowd the skillet. Cook each thigh undisturbed for about 3 minutes, allowing them to brown. Flip and cook undisturbed for another 3 minutes. Remove the browned chicken thighs from the skillet and set aside.
Pour the olive oil into the skillet. Add the onions and sauté for 5 minutes, stirring occasionally. Next, put in the minced garlic and curry powder. Cook for 30 seconds, stirring to coat the onions and avoid burning.
2 TBS olive oil, ½ onion, 3 cloves garlic, 1 TBS curry powder
Whisk in the broth and sour cream. Bring to a low boil. Once boiling, remove the skillet from the heat. Nestle the browned chicken thighs into the curry sauce. Put the skillet into the heated oven. Cook for 25 - 30 minutes, until the internal temperature of the thighs read 165℉.
1 cup chicken or vegetable broth, 1 cup sour cream
Once cooked, take the skillet out of the oven. Add a sprinkle of minced parsley and enjoy over rice or with a piece of naan.