Prepare the penne noodles per the box instructions. Reserve 1 cup of the pasta water before draining.

While the noodles are cooking, heat the olive oil in a large skillet over medium heat. Add the garlic and sauté for 2 minutes. Stir frequently and when the garlic's edges begin to brown, add the crushed red pepper. Sauté for an additional 30 seconds. Add the reserved pasta water and bring to a boil.

Simmer for 5 minutes, then add the cooked pasta to the pot. Toss carefully, then stir in the salt and parsley. Allow to rest for an additional 5 minutes off the heat before serving.

When serving, top with fresh lemon zest.