Bring a large pot of water to a boil, salt it, add the pasta and cook until al dente; drain.
While the pasta is working, in a small saucepan, warm the cream and lemon peel over medium heat.
Using a food processor, puree the parsley, cheese, nuts and garlic. Mix in the lemon juice. With the machine on, blend in the EVOO until combined.
Place the pesto in a large pasta bowl; season with salt and pepper. Stir in the hot cream mixture, add the pasta and toss.