In a large mixing bowl, combine the chopped artichoke hearts, halved cherry tomatoes, finely chopped red onion, and fresh parsley.
In a small bowl, whisk together the olive oil, red wine vinegar, garlic powder, salt, and pepper until well combined.
Pour the dressing over the salad mixture and toss gently to coat all ingredients evenly.
Sprinkle the crumbled feta cheese on top and give the salad a final gentle toss.
For best flavor, let the salad sit for at least 15 minutes before serving to allow the flavors to meld.