Cut the tops off the bell peppers and remove the seeds and membranes. Set the tops aside for later.
In a medium saucepan, bring the vegetable broth to a boil and add the quinoa. Cover and reduce the heat to low, cooking for about 15 minutes or until the liquid is absorbed. Fluff with a fork and set aside.
In a large mixing bowl, combine the cooked quinoa, cherry tomatoes, cucumber, red onion, chickpeas, feta cheese, olives, olive oil, lemon juice, oregano, garlic powder, salt, and pepper. Mix well to combine all ingredients.
Stuff each bell pepper with the quinoa mixture, packing it in gently. Place the stuffed peppers upright in a baking dish.
Drizzle a little olive oil over the tops of the peppers and sprinkle with additional salt and pepper if desired.
Place the reserved tops of the peppers around the edges of the baking dish to keep them from burning and bake in the preheated oven for 30-35 minutes, until the peppers are tender.
Remove from the oven and let cool for a few minutes before serving. Garnish with fresh parsley on top.
Notes
Feel free to customize the stuffing ingredients based on your preferences.