1 broccoli, about 350g/12oz, cut into big florets including the stalk
5 garlic cloves, finely chopped or crushed
1 lemon, zest only
1 rosemary sprig, leaves picked and finely chopped (or 2 tsp dried rosemary)
500ml/18fl oz chicken stock
350g/12oz dried pasta
freshly ground black pepper
4 tbsp olive oil, plus extra to serve
50驳/1戮辞锄 Parmesan, finely grated
2 large skinless chicken breasts