In a large skillet, heat the oil over medium-high heat and cook the garlic for 1 minute. Add the chicken, red pepper, and onion. Saute for 8-10 minutes or until the chicken is lightly browned on both sides, stirring occasionally.
Add the chicken broth, water, parsley, cumin, salt, and pepper. Bring to a boil and stir in the couscous. Cover and remove from the heat. Let stand for 5-10 minutes, or until the water is absorbed. Serve immediately.