Place chicken pieces in a large bowl and add the garlic, cilantro, vinegar, oil, olives, capers, Medjool dates, bay leaves, 1 teaspoon salt and ½ teaspoon black pepper.
Place Ottolenghi Chicken Marbella with dates in the oven and cook for 50 minutes, basting two or three times, until the meat is golden brown on top and cooked through.