Preheat your oven to 350°F (175°C).
In a large skillet over medium heat, add the olive oil. Once hot, add the diced chicken and cook for about 5-7 minutes, until the chicken is no longer pink.
Stir in the broccoli florets and cook for an additional 3-4 minutes until they are tender but still bright green.
In a mixing bowl, combine the cauliflower rice, cream of chicken soup, milk, garlic powder, onion powder, salt, black pepper, and paprika (if using). Mix until well combined.
Add the chicken and broccoli mixture to the bowl and stir to combine all ingredients.
Pour the mixture into a greased 9x13-inch baking dish and spread it evenly.
Top with shredded cheddar cheese and breadcrumbs if using.
Bake in the preheated oven for 25-30 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let it sit for 5 minutes before serving.