Start by cooking the pasta according to package instructions.
In the meantime, zest the lemons and chop the parsley.
In a saucepan, combine olive oil, lemon zest, cream, parsley, butter, and seasoning. Heat and whisk until well combined. Add parmesan last.
If you prefer a more liquid sauce, you can add some pasta water.
Add the cooked pasta to the sauce, mix well, and serve.
