Bring a pan of salted water to the boil then add the pasta and cook according to packet instructions
Meanwhile in a large bowl combine the crab meat with the parsley, chilli, lemon juice and zest and stir together.
Drain the pasta, reserving some of the cooking water. Add the pasta to the crab along with a couple of tablespoons of the cooking water. Use tongs to thoroughly mix the pasta with the crab so that all the pasta gets a good coating of sauce.
Serve in warmed bowls and sprinkle over a generous amount of Parmesan, a drizzle of oil and a grinding of black pepper.