Preheat oven to 350 degrees Fahrenheit.
In a pan over medium heat, spray some non-stick spray. Add the chopped onion, green bell pepper, garlic, and oregano. Sauté until onion is translucent and soft, then set aside.
To a large mixing bowl, add ground turkey, crushed Wasa crackers, egg whites, mozzarella cheese, banana pepper rings, black pepper to taste, and lastly onion/pepper mixture.
Hand mix ingredients or put into a food processor until combined.
Form turkey mixture into 24 1-inch sized balls and place onto a baking sheet sprayed with non-stick cooking spray.
Bake in 350° oven for 35 minutes, turning each meatball halfway through.
Eat and enjoy!