Boil a large pot of salted water and cook whole wheat pasta according to package directions until al dente.
Drain pasta and rinse with cold water to stop the cooking process and remove excess starch.
In a large mixing bowl, whisk together olive oil, red wine vinegar, lemon juice, dried oregano, salt, and pepper.
Add the cooled pasta, cherry tomatoes, cucumber, bell pepper, red onion, and olives to the bowl.
Toss all ingredients until thoroughly coated with the vinaigrette.
Fold in the crumbled feta cheese and fresh parsley.
Refrigerate for at least 30 minutes before serving to allow flavors to meld.