Prepare the Peppers: Preheat the oven to 325°F. Cut each pepper lengthwise in half and remove the seeds. Arrange the pepper halves in a 15 × 10 × 1-inch baking pan coated with cooking spray.
Cook the Turkey Mixture: Heat the olive oil in a large skillet over medium-high heat. Add the ground turkey, chopped onion, minced garlic, cumin, Italian seasoning, salt, and pepper. Cook, breaking the turkey into crumbles as it cooks, until the meat is no longer pink, about 6–8 minutes.
Combine the Filling: Allow the cooked turkey mixture to cool slightly. Stir in the finely chopped tomatoes, shredded cheese, soft bread crumbs, and minced fresh parsley until the ingredients are evenly combined.
Fill the Peppers: Divide the turkey mixture among the prepared pepper halves, filling each one evenly.
Add the Paprika: Sprinkle the filled pepper halves with the paprika.
Bake the Peppers: Bake the stuffed peppers uncovered at 325°F until the filling is heated through and the peppers are tender, about 20–25 minutes.
Finish and Serve: If desired, sprinkle the baked stuffed peppers with additional minced fresh parsley just before serving.