Add the couscous, stir and simmer for 10 minutes (NOTE 1)
Take the pan off the heat.
Add the butter, grated zucchini, lemon juice and chopped fresh herbs. Mix and allow to warm and let the couscous steam for 5-10 minutes (lid on). Do not cook anymore. (NOTE 2)
Mix, add salt & pepper to taste.
Drizzle with some olive oil. (optional)
Notes
Use the ratio liquid : couscous as per the packaging. Different brands have different degrees of 'instant' and may thus vary in amount of liquid needed and cooking time.
If you don't have fresh herbs, you can substitute with the dried version. 1 tablespoon of fresh herbs equals 1 teaspoon of dried herbs.