1. Warm the oil in a Dutch oven over medium-high heat. Add the almonds; toast until golden, 2 minutes. Using a slotted spoon, transfer them to a bowl.
2. Season the chicken with the salt and black pepper, add to pot and cook until browned, 10 minutes. Using a slotted spoon, transfer chicken to a plate. Add the scallions, zucchini and carrots; cook 6 minutes. Mix in the cinnamon, cumin, coriander and turmeric; saute 1 minute.
3. Add the chicken stock, tomato, chickpeas, lemon zest and raisins; bring to a simmer. Return chicken to pot, cover and simmer 10 minutes. Using a slotted spoon, transfer chicken and vegetables to a serving bowl. Season with lemon juice. Cover and keep warm.
4. Add the couscous to the liquid remaining in pot, cover and turn off heat. Let rest 5 minutes; fluff couscous with a fork. Serve chicken and vegetables over couscous, garnished with almonds and parsley.