Fill a stockpot halfway with water, bring to a boil, and add the pasta. Boil over high heat for 8-10 minutes, until pasta is al dente.
Drain using a colander, and rinse noodles under cold water.
Chop the green pepper into ½ inch pieces.
Add 1 cup of dressing, parmesan, and Italian seasoning to a small bowl, and stir to combine.
Add noodles to a large bowl, and pour dressing over, then toss to coat.
Add the tomatoes, olives, and chopped peppers, and toss to combine.
Cover and refrigerate for 1 hour or overnight.
Before serving, add the additional ¼ cup of dressing, and gently toss.
Top with extra parmesan if desired.