Soak olives in water for 30 minutes and drain. In sauce pan, bring olives to a boil with just enough water to cover. Drain. This removes the saltiness of the olives. Heat oil in pan, add garlic, tomato, pepper, turmeric, harissa, lemon juice and water. Bring to a boil and add chicken. Cover and simmer for 30 minutes. Add olives and stir well. Cover and cook for 20 minutes. Add parsley and serve with rice or couscous.