Preheat the oven to 375°F (190°C) and lightly grease a baking dish.
Heat olive oil in a pan over medium heat.
Cook the sliced chicken for 3 to 4 minutes until lightly golden, seasoning with salt, black pepper, paprika, and Italian seasoning.
Add chopped onion, sliced mushrooms, zucchini, and minced garlic to the pan and cook for about 4 minutes until slightly tender.
Stir in heavy cream and chicken broth, then simmer for 2 minutes.
Mix in grated Parmesan cheese.
Transfer the mixture to the prepared baking dish and top with shredded mozzarella cheese.
Bake for 20 to 25 minutes until the dish is bubbly and golden on top.
Let the bake rest for 5 minutes before serving.
Serve warm with rice, pasta, or garlic bread.