Pork Mince, Chilli & Rocket Penne

400 g dried penne pasta

2 tablespoons olive oil

1 brown onion, finely chopped

2 garlic cloves, crushed

2 long red chillies, deseeded and finely chopped

2 tablespoons baby capers, drained and rinsed

500 g pork mince

60 g baby rocket leaves

finely grated parmesan and extra sliced red chilli, to serve