1.Pat thawed prawns with absorbent paper to remove excess liquid.
2.Cook pasta in a large saucepan of salted boiling water, according to packet instructions, until tender. Drain, reserving 1/4-cup (60ml) of the cooking liquid. Return pasta to saucepan.
3.Meanwhile, heat half the olive oil in a large non-stick frying pan over high heat. Add prawns, cook until browned lightly. Add garlic and chilli, cook, stirring, until prawns are just cooked.
4.Add prawns, any pan juices, reserved cooking water, parsley and remaining olive oil to pasta and toss to combine. Serve with lemon wedges and green salad, if desired.