1Heat the olive oil in a large tagine or heavy-bottomed pot over medium heat.
Add the chopped onion and minced garlic, and sauté until the onion is translucent, about 5 minutes.
Add the ground cumin, ground coriander, ground ginger, ground black pepper, salt, and cayenne pepper. Stir well to coat the onions and garlic with the spices.
Add the chicken thighs to the pot, and brown them on all sides, about 5-7 minutes.
Pour in the chicken broth, and bring the mixture to a simmer.
Add the chopped preserved lemon and green olives to the pot.
Cover the tagine or pot, and reduce the heat to low. Let it simmer for about 45 minutes, or until the chicken is cooked through and tender.
Stir in the chopped fresh parsley just before serving.
Serve the Lemon and Olive Chicken Tagine hot, with couscous or rice on the side.