Warm the olive oil in a saucepan, add the lemon zest and lemon juice and simmer gently for 1 minute. Add the cream, return to a simmer and cook for a further 2-3 minutes. Season with salt and pepper and stir in the chives.
While making the sauce, cook the pasta until tender. Drain and add to the finished sauce. Stir in half the Parmesan and offer the remainder separ