Preheat your oven to 220 degrees celsius (fan-forced) and lightly grease a non stick baking tray.
Place the stale bread and parmesan cheese (which has been cut into 3cm chunks) into your Thermomix bowl and mix for 8 seconds, speed 8 to grate. Set aside until needed.
Without washing the bowl, add the zucchini and carrot and mix for 5 seconds, speed 4 to grate.
Add the cheese and breadcrumbs along with all other remaining ingredients to your Thermomix bowl and mix for 10 seconds, speed 4 to combine.
Scrape down the sides of your Thermomix bowl and mix for a further 10 seconds on speed 4 to combine.
Use a tablespoon to scoop up the chicken mixture and shape into balls. If you find the mixture is still a little ‘wet’ you can add some more breadcrumbs to help it ‘stick’ together and shape into balls.
Place the chicken balls onto your prepared baking tray and cook for 16 - 18 minutes or until they begin to turn golden and are cooked through when tested.