Steps
1. Preheat the oven to 375°F (190°C).
2. Cut the top off the bell pepper and remove the seeds and membranes.
3. In a bowl, combine the cooked quinoa, diced tomatoes, zucchini, red onion, shredded cheese, olive oil, dried oregano, salt, and pepper.
4. Stuff the bell pepper with the quinoa mixture.
5. Place the stuffed bell pepper on a baking sheet and bake for 25-30 minutes, or until the pepper is tender and the filling is heated through.
6. Serve hot and enjoy!