Preheat the oven to fan assisted 200C / 220C / 425F / gas 7. Mix together the duck breasts, baharat spice, salt and oil and leave to marinate for 5 mins. Put the duck breast (skinless side down) into a cold frying pan and fry on medium heat for 6 mins. Quickly turn over the duck breasts and sear for 30 seconds before transferring them to a baking tin. Roast for approximately 10 mins (rare), 15 min (medium) or 18 min (well done). Let the duck rest for 10 mins whilst you make the couscous salad.
For the couscous salad:
Mix the couscous, salt and water in a bowl, then cover with a plate and let it stand for 5 mins. Then stir it again and cover for another 5 mins. Using a fork fluff up the couscous and add all the rest of the salad ingredients and mix well.
To serve
Thinly slice the duck breasts and serve over the couscous salad.