Bring a large pot of salted water to a boil. Add the angel hair pasta and cook until tender but still firm to the bite, stirring occasionally, about 6 to 8 minutes. Drain, reserving 1 cup of the pasta water.

Stir the oil, parsley, lemon juice and lemon peel in a large serving bowl.

Add the cooked pasta and toss with enough reserved pasta water, 1/4 cup at a time, to moisten.

Season the pasta with salt and red pepper flakes, to taste.

Sprinkle grated lemon peel over pasta for extra flavor and texture.

Sprinkle with the Parmesan and serve.