Pumpkin falafel pockets

Name: Pumpkin falafel pockets
Ingredients: 1kg pumpkin or butternut squash, deseeded and cut into wedges; 400g can chickpea, drained, rinsed and dried; 1 garlic clove, chopped; ½ tsp chilli flakes; 1 tsp ground cumin; small bunch parsley, roughly chopped; 2 slices white bread, whizzed to crumbs; 2 carrots, coarsely grated; ½ small red onion, finely sliced; 100g feta cheese, crumbled; 4 wholemeal pitta breads to serve