Beautiful courgette carbonara

INGREDIENTS

• sea salt
• freshly ground black pepper
• 6 medium green and yellow courgettes
• 500 g penne
• 4 large free-range egg yolks
• 100 ml single cream
• 1 small handful Parmesan cheese, freshly grated
• olive oil
• 6 slices higher-welfare back bacon, cut into chunky lardons
• 1 small bunch fresh thyme, leaves picked and chopped, flowers reserved (if you can get hold of flowering thyme)
• a few courgette flowers, optional