Cook the couscous according to the instructions on the package. Drain well, season with salt and pepper, cover with a lid and set aside.
Season both sides of the chicken with cumin, lemon zest, salt and pepper.
Heat half of the oil in a non-stick pan or skillet over medium heat.
Brown the chicken on both sides, about 3 minutes per side.
Add the remaining oil, bell pepper, onion and garlic; sauté for 5 minutes.
Add in the broth and bring to a simmer for 8-10 minutes. Then stir in the lime juice and tomato paste and simmer until the sauce thickens to a consistency that coats the back of a spoon. Taste and adjust the seasoning with salt and pepper if needed.
Spoon the sauce over the chicken; serve with couscous and dinner rolls. Garnish with fresh parsley.