Saute chilies and ginger and for a minute. Add chopped green and yellow zucchinis and saute further for a minute. Add turmeric powder, red chili powder and coriander powder and mix well.
Add couscous and mix well. Cook till the zucchinis and couscous are done. Transfer this into a bowl, cool and add salt and onion and mix well. Mash lightly with the back of the spoon
Heat a non-stick pan, drizzle oil.
Divide the mixture into 12 equal portions, shape them into balls and flatten to make kebabs.
Place the kebabs on a hot pan, shallow-fry, turning sides, till they are brown and crisp on both the sides. Drain on absorbent paper.
To make a garnish, cut into halve remaining zucchini, make slits on one half without cutting through, press lightly with the knife and spread the layers to make a fan. Place this on one side of a serving plate.
Make slits on the remaining half without cutting through, insert alternate layers inside the previous one to make a flower. Keep this on the other side of the serving plate. Place kebabs in the center of the serving plate, garnish with red and green capsicum curls and serve immediately.