HEAT the oil in a large saucepan and sauté the spring onion for 2-3 minutes or until softened. Add the chicken and sauté for 5-8 minutes or until just cooked through. Add the peas and cook for a further minute. Stir in the carrot and zucchini and keep warm.
BRING the water to the boil in a saucepan then stir in VEGEMITE. Sprinkle over the couscous. Turn off the heat, cover and stand for 5 minutes or until all the liquid has been absorbed. Fluff with a fork then stir through the chicken and vegetables. Serve immediately.