Garlic, Olive Oil, and Crushed Red Pepper Pasta

1/2 pound spaghetti
1/2 cup olive oil
5 cloves garlic
1 tsp crushed red pepper
1/2 cup shredded Parmesan cheese

Boil water for the pasta and cook according to package directions. 
While the pasta is cooking, chop the garlic. 
When the pasta is about halfway done, heat the olive oil over medium heat in a skillet. Add in the garlic and the crushed red pepper and cook until the garlic is fragrant and slightly brown, or 3-5 minutes.
When the pasta is al dente, reserve 1/8 cup pasta water and drain. Add the pasta and water to the skillet, and stir in 1/4 cup Parmesan cheese. 
Divide the pasta between two bowls and top with the remaining cheese. Drizzle with additional olive oil, if desired.