Soak the wooden skewers in water for 10-15 minutes. This is to prevent the skewer from catching fire while grilling.
Cut chicken breast into 1-inch pieces. Cut pepper and onion into square wedges.
To the chicken pieces, add olive oil, lemon juice, finely minced garlic, smoked paprika, ground cumin, cinnamon, salt, pepper, and chopped fresh parsley. Let it marinate for at least 30 minutes for up to 24 hours in the refrigerator.
Bring marinated chicken pieces to room temperature before grilling.
Thread the chicken and vegetables onto the skewers.
Cook for 5-7 minutes on each side or until chicken is cooked through. Bast chicken skewers in between with the leftover marinade from the bowl once.