In a saucepan, bring the broth to a boil.
Stir in the couscous and salt, then remove from heat and cover for about 5 minutes.
Fluff the couscous with a fork.
In a large bowl, combine the cooked couscous with olive oil.
Add diced vegetables and mix well.
Incorporate the chopped herbs.
Add lemon zest and juice for flavor.
Optionally, mix in feta cheese or chickpeas.
Serve warm or chill in the refrigerator for a refreshing salad.