Cook the spaghetti in boiling salted water according to pack instructions.
While the spaghetti is cooking, split the chillies down the centre lengthways. Using a teaspoon and starting at the top, scoop the seeds from the flesh - add these if you like your food hot. Using a sharp knife, cut the chillies in thin strips, bundle them together and cut across to make squares.
Drain the spaghetti, toss with a drizzling of olive oil and set aside.
Heat the oil in a deep frying pan or saut pan over a high heat and add the prawns. Stir in the chillies, season, then add the spaghetti.
Remove from the heat, fold through the rocket and stir.
