Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish with olive oil.
In a large bowl, mix mozzarella, cottage cheese, scallions, eggs, Italian herbs, salt, and pepper. Set aside.
Heat olive oil in a large skillet over medium heat.
Sauté zucchini and mushrooms for a few minutes until slightly softened.
Add cubed chicken, season lightly, and cook until lightly golden (about 5 minutes).
Transfer mixture to a colander and drain excess liquid.
Combine the cooked mixture with the cheese mixture and mix well.
Spread evenly into the prepared baking dish and top with parmesan.
Bake for 30–40 minutes until golden, bubbly, and fully cooked.
Let rest for 5–10 minutes before slicing and serving your Chicken Zucchini Bake Low Carb.