Cook pepperoni in dry fry pan. Drain pepperoni on paper towels. In the oil left by the pepperoni, cook onion over moderate heat for 3 minutes. Add garlic; cook until golden. Return pepperoni to pan with onion and garlic. Rewarm. Add beans, tomatoes, basil, oregano, hot pepper flakes, and parsley. Simmer, partially covered, 5 to 7 minutes, or until thickened. Cook pasta according to directions on package. Drain. Add pasta to sauce. Toss with freshly grated Parmesan cheese.