Bring a large pan of water to the boil and add the linguine. Cook according to instructions on the packet.
For the last 2 minutes of cooking add the mixed packet of seafood (defrosted if frozen) and simmer for 2 minutes.
Drain well and return to the pan, crumble in the crab meat, add the chilli, lemon zest, juice, parsley, olive oil, butter and seasoning, return to the heat for 3 minutes and mix carefully. Serve