Place the couscous, onion, mint and chives in a bowl and toss to combine. Set aside.
Brush the pork with harissa. Heat a char-grill or barbecue over high heat and char-grill or barbecue the pork for 4–5 minutes each side or until cooked through. Slice and serve with the couscous. Serves 4.
+You can find harissa in the spice aisle of supermarkets and Spanish and Middle Eastern grocers.