Steps
              1. Preheat oven to 375°F (190°C).
2. Cut the top off the bell pepper and remove seeds and membranes.
3. In a bowl, combine cooked quinoa, chickpeas, diced tomatoes, red onion, garlic, parsley, olive oil, oregano, salt, and pepper.
4. Stuff the bell pepper with the quinoa mixture and sprinkle feta cheese on top if using.
5. Place the stuffed pepper in a small baking dish and cover loosely with foil.
6. Bake for 25-30 minutes until the pepper is tender.
7. Remove foil and bake for an additional 5 minutes to lightly brown the top.
8. Let cool slightly before serving.