Split the prawns in half and remove the intestinal tract. Set aside in refrigerator until ready to marinate.Preheat oven to 250°C.
Finely chop all the herbs, ginger, garlic, chilli and lemon zest, and place in a bowl. Add the olive oil, and season with salt and pepper. Brush the marinade on the cut side of the prawns and place on a baking tray, marinade-side up.
Cook the prawns in pre-heated oven for about 5 minutes. Alternatively, cook on a preheated barbecue or charcoal kettle barbecue. (Cook by pressing the prawns to caramelise the flesh.)
Squeeze with the lemon juice, season with salt and pepper. Serve with a lemon wedge, extra virgin olive oil and parsley.