To prepare a tom kerridges middle eastern style chicken legs recipe, first you will need to prepare the chicken. Cut the legs off of the boneless chicken breasts and remove the skin. Place the bones back in the refrigerator to marinate for at least 4 hours. Heat the olive oil over medium heat and add the chopped garlic. Saute the garlic for 1 minute. Add the tahini, cumin, oregano, and salt and pepper to taste. Simmer the mixture for an additional 5 minutes. Remove from the heat.