For the Red Pepper Harissa, place the roasted red peppers, 1 tsp each of the oil and vinegar, ½ tsp of the Cumin, the sugar, ¼ tsp of the Garlic Granules and the Chilli powder in a blender or food processor. Cover and blend until a chunky sauce forms (do not purée) then set aside.
Par-boil the butternut squash for 10 minutes. Drain.
Mix the remaining oil and vinegar, Paprika, Garlic Granules, Cumin, Parsley and Salt in a small bowl. Place the butternut squash in a large bowl. Add half of the spice mixture and toss to coat well. Place the chicken in another bowl. Add the remaining spice mixture and turn to coat well.
Grill the chicken on a pre-heated medium-heat grill for 4 minutes on each side or until cooked through. Grill the butternut squash for 2-3 minutes on each side or until tender. Serve 2 tbs of the Red Pepper Harissa with each serving of chicken and squash.