Bring 4 cups of salted water to a boil and add the pasta. Cook until just al dente. You might notice less water than usual, and that's perfectly fine!
About 2 minutes before the pasta is done, toss in the peas. Let them cook together for the remaining time.
Add the Boursin cheese to the hot pasta and stir until it melts into creamy goodness.
Season with salt, pepper, lemon zest, and fresh chives. Dinner is served!