Wash your hands well with soap and warm water for at least 20 seconds.
Cook according to package directions. Drain and rinse in cold water.
Wash tomatoes, cucumbers and parsley. Cut tomatoes and cucumbers in bitesize pieces. Chop parsley into small pieces.
Cut pepperoni in quarters.
Cut onion into small pieces.
In a large bowl add spaghetti, tomatoes, cucumbers, onion and pepperoni. Drizzle dressing over mixture and toss ingredients together. Sprinkle with Parmesan cheese and parsley.
Serve. *Can be made a day ahead of serving. Store in airtight container in the refrigerator for up to 3 days.