Step 1: Cook the pasta according to package directions until al dente. Drain thoroughly and rinse with cold water to cool completely and prevent sticking. Transfer to a large mixing bowl.
Step 2: In a small bowl, whisk together the extra virgin olive oil, red wine vinegar, minced garlic, dried oregano, dried basil, salt, black pepper, and optional red pepper flakes to create the dressing.
Step 3: Add the halved cherry tomatoes, diced cucumber, diced red bell pepper, diced yellow bell pepper, thinly sliced red onion, sliced black olives, and halved or cubed fresh mozzarella to the bowl with the cooled pasta.
Step 4: Pour the prepared dressing over the pasta and vegetable mixture. Toss gently to ensure all ingredients are evenly coated with the dressing.
Step 5: Cover the bowl and refrigerate for at least 1-2 hours (preferably longer, up to 4 hours) to allow the flavors to meld. Before serving, give it another good toss and garnish with fresh chopped parsley.