Spray a 9 by 13 baking dish with nonstick cooking spray.

Place sliced peppers, cut side down into the dish.

Add 1/2 cup of water to bottom of dish, cover with plastic wrap and microwave on high for 2 minutes. (You can skip this step and just bake peppers for longer in the oven until tender.)

Preheat oven to 350 degrees. In a large bowl combine onion, chicken, egg, spinach, and quinoa.

Add 1/2 cup of feta, sun dried tomatoes and seasonings to the chicken mixture. Fill each pepper half with mixture and top with remaining feta cheese.

Cover and bake for 30 minutes.

Uncover and bake additional 15-20 minutes or until peppers are tender.

Add additional toppings and serve!