Preheat oven to 400°F.
In a blender, combine cottage cheese, Italian seasoning, salt, pepper, red pepper flakes, and parmesan. Blend until smooth.
In an 8x11” baking dish, add uncooked pasta, chicken, cottage cheese sauce, broth, and broccoli. Gently stir to combine.
Cover tightly with foil and bake for 35 minutes, or until pasta is just al dente. (Different pasta shapes may vary — check early if needed.)
Meanwhile, combine panko and melted butter.
Remove foil, give the pasta a gentle stir, then top with mozzarella and the buttery panko mixture.
Bake uncovered for 10 minutes, or until bubbly and golden brown.
Garnish with parsley and serve warm.