Preheat oven to 350° F. and spray the bottom of a 9x13 baking dish with cooking spray. Place the prepared peppers in cut-side up.
In a large bowl combine the cooked rice, chickpeas, cherry tomatoes, sun-dried tomatoes, olives and feta. Season with salt and pepper then set aside.
Heat a small skillet with the olive oil over medium-high heat. When the skillet is hot add in the red onion and sauté 2 minutes. Add in the garlic and spices and sauté another minute. Add in the tomato sauce and parsley and stir everything together cooking for another minute.
Pour the mixture in with the rice and add in the lemon juice. Stir everything together until it's coated in the sauce. Taste for seasoning then divide the filling into the pepper halves.
Cover loosely with foil and bake for 40-45 minutes. Remove the foil and bake for another 10-15 minutes. Serve immediately.
