In a pot heat the water with a little salt and bring it to a boil.
Add the couscous,turn off the heat,mix it and cover it.Let it stand for about 2 minutes.After 2 minutes fluff it with a fork.Your couscous is ready.
In a large bowl add the Olive Oil, garlic,lemon juice ,zest,salt and pepper.Mix well.
Add all the other ingredients and the Couscous and mix well.Check the seasonings.
Cover and refrigerate for about an hour.Serve chilled.