Heat oil on medium heat in a cast iron skillet. Reduce heat to medium-low and cook turkey until lightly browned and it reaches an internal temperature of 165ºF (75ºC), breaking it up as you go.
Stir in onion, tomatoes and garlic and continue cooking until fragrant and the onion is translucent (about 5 minutes).
Reduce heat and add rice, tomato sauce, oregano and paprika and continue stirring until warmed through. Season with salt and pepper to taste and remove from heat.
Place pepper halves in a 9×13-inch baking dish and fill them with turkey and rice mixture. Sprinkle cheese evenly across the tops of the peppers. Drizzle with a little bit of oil and add 1/3 cup (80 ml) filtered water to bottom of baking dish.
Bake at 375ºC (190ºC) for 30 minutes until the cheese is lightly browned and the peppers pierce easily with a fork. Remove from oven and serve!