Combine the parsley, mint, lemon zest, lemon juice, oil, oregano and a pinch of cayenne pepper in a large bowl. Add the prawns, tossing well to coat.
Preheat the oven to 220°C. Place the prawns on a large baking tray. Top with the tomato and feta cheese. Bake for 4 minutes, without turning, or until the prawns are cooked through and the feta is melted.
Did you know?
Prawns are rich in zinc, and school prawns also provide some iron. Many adults, especially women and the elderly, consume less of both these minerals than their bodies require. Eating more prawns is a tasty way to get adequate amounts.