In a large bowl, combine the cooked brown rice, chickpeas, cherry tomatoes, cucumber, bell pepper, red onion, feta cheese, olives, and parsley. Toss gently to mix all the ingredients evenly.
In a small bowl, whisk together the olive oil, red wine vinegar, dried oregano, salt, and pepper until well combined.
Pour the dressing over the rice mixture and toss again to coat all the ingredients evenly.
Let the bowl sit for about 10 minutes to allow the flavors to meld, or refrigerate for up to an hour for a chilled option.
Serve the Mediterranean rice bowl in individual bowls or on a large platter. Enjoy!