Preheat oven to 180 degrees C (350 degrees F). Remove pastry from freezer and allow to defrost on bench covered with a damp cloth
Add onion to the food processor and pulse to chop. Add to a large bowl. Add chickpeas, carrot and parsley to the processor now and process until finely chopped. Add to the bowl along with the onion.
Also add the dried herbs and 1 egg. In a separate bowl add the bread and pour some milk over and allow to absorb. Squeeze as much liquid out as possible and also add to the mixture.
Using your hands, mix until well combined. Crumble the feta into the mixture and stir to combine. Small chunks of feta are good.