Minestrone soup with legumes and bacon

Name: Minestrone soup with legumes and bacon
Ingredients: 2 tbsp extra virgin olive oil; 60g smoky bacon, finely diced; 1 large red onion, finely diced; 2 cloves garlic, crushed; 1 leek, white part only, washed and diced; 4 celery stalks, finely diced; 2 carrots, peeled and finely diced; 1 tsp sea salt; 2 tbsp tomato paste; 25g shredded silverbeet, leaves and stalks; 400g can chopped tomatoes; 1 fresh bay leaf; 2 flat-leaf parsley sprigs, leaves removed and roughly chopped; 1 litre chicken stock; 100g cannellini beans, cooked; 100g chickpeas, cooked; 1 cup orzo pasta, cooked; freshly ground pepper; parmesan, to serve