Heat olive oil in a medium skillet over medium heat, add the scallion whites cinnamon, salt, and pepper, and cook until tender, about 5 minutes. Stir in the garlic, tomato, and raisins and cook over high heat until mixture is almost dry, about 6 minutes. Add the chicken and cook stirring until meat is cooked through, about 5 to 6 minutes. Remove from the heat and stir in the green part of the scallions, yogurt, and pine nuts. Serve mixture stuffed into warm pita with tomato slices and cucumber slices.