In a mixing bowl, stir together the harissa paste, olive oil, minced garlic, paprika, cumin, salt, and pepper. Mix until the oil and spices fully blend into the harissa. This will be the flavor powerhouse of the dish.
Add the chicken pieces to the bowl and toss until each piece is well-covered with the marinade. I like to let it sit for at least 2 hours in the fridge—overnight is even better if you want the flavors to really sink in.
Heat your skillet over medium-high heat. Place the marinated chicken in the hot pan and cook for 8–10 minutes, stirring occasionally, until browned and fully cooked. You should see a nice sear on the edges.
Transfer the chicken to a serving plate and sprinkle with fresh parsley or dill. Serve it hot with naan, rice, couscous, or a crisp salad for a complete meal.