Boil the chickpea pasta in salted water according to package directions until al dente, typically 7-9 minutes.
Drain the pasta and rinse immediately under cold running water to remove excess starch and stop the cooking process.
In a small mixing bowl, whisk together the olive oil, red wine vinegar, oregano, garlic powder, salt, and pepper until emulsified.
In a large salad bowl, combine the cooled pasta, diced chicken, tomatoes, cucumber, bell pepper, red onion, mozzarella pearls, and olives.
Drizzle the vinaigrette over the salad components and toss thoroughly to ensure even distribution.
Garnish with fresh parsley and refrigerate for at least 30 minutes to allow the dressing to penetrate the pasta and vegetables before serving.