Boil the water for the couscous.
Add the couscous, oregano, salt and zest into a bowl, mix.
Add the boiling water and put on a secure lid, let sit until all water have been absorbed.
Thinly slice the zucchini, salt and put in a colander for ten minutes. If desired cut the slices in quarters to easier mix them with the couscous.
Gently pat the zucchini slices with a paper towel.
Heat a frying pan, add the oil and the zucchini slices. Let fry a few minutes on each side until zucchini is soft. Depending on the size of your slices, this can take different amount of time.
Add the lemon juice and let cook together for a few minutes.
Make the dressing, by adding together all ingredients in a bowl and stir with a fork until everything is mixed.
Fluff the couscous with a fork before adding the zucchini and any juices left in the pan.
Mix thoroughly.
Cut the green of the spring onion with a scissor on top of the salad.
Serve as a side dish or as a salad on its own at your next picnic.