Spray a large pot or Dutch oven with non-fat cooking spray and set over medium high heat.
Cut chicken into bite size pieces, and brown in pot. Remove chicken after all pieces are browned on each side.
Add in garlic and onion and sauté, stirring constantly, until tender, about 5 min. Return chicken to pan, and sprinkle with cumin, paprika, turmeric, salt, pepper, cinnamon and nutmeg.
Add in potatoes, tomatoes, and 1-2 cups of broth (use enough broth to cover all the chicken and potatoes. Cover and simmer over low heat, stirring occasionally, until chicken is tender and cooked through (about 25-30 minutes).
Add in lemon juice, lemon zest, capers olives and parsley and heat through. Add in additional salt and pepper to taste, if desired. Serve immediately.