Preheat the oven to 375 degrees Fahrenheit (190 degrees Celsius) and lightly coat a 9x13 inch baking dish with non-stick cooking spray.
In a large mixing bowl, combine the shredded chicken breast, marinara sauce, blended cottage cheese, garlic powder, and dried oregano until the chicken is thoroughly coated.
Transfer the chicken mixture into the prepared baking dish and spread it into an even layer.
Distribute the shredded mozzarella cheese and 0.25 cup of the grated parmesan cheese evenly over the top of the chicken mixture.
In a small bowl, whisk together the panko breadcrumbs, the remaining 0.25 cup of parmesan cheese, and the red pepper flakes.
Sprinkle the panko mixture uniformly over the cheese layer.
Bake the casserole for 20 to 25 minutes, or until the cheese is melted and bubbling and the breadcrumbs are golden brown.
Remove from the oven and allow the casserole to rest for 5 minutes before garnishing with fresh basil and serving.