Preheat your oven to 350°F (175°C). Cook quinoa according to package instructions, about 15 minutes. Shred chicken and chop broccoli.
In a large mixing bowl, combine cream of chicken soup and chicken broth. Stir until smooth. Add garlic powder, onion powder, black pepper, salt, paprika, and red pepper flakes. Mix well.
Add cooked quinoa, shredded chicken, and broccoli florets to the bowl. Pour the creamy sauce over the mixture and stir gently until well combined.
Pour the combined mixture into a greased 9x13 inch baking dish. Mix breadcrumbs with olive oil and sprinkle over the casserole. Bake for 30-35 minutes until bubbly and golden brown.
Let the casserole cool for a few minutes before serving.