Preheat your oven to 375°F (190°C).
In a large mixing bowl, combine the shredded chicken, sliced zucchinis, sour cream, garlic powder, onion powder, salt, and pepper.
Drizzle the olive oil over the mixture and stir again to coat.
Transfer the mixture into a greased baking dish and spread evenly.
Sprinkle the shredded mozzarella cheese over the top of the mixture.
Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden brown.
Remove from the oven and let it cool for a few minutes before serving.
