Preheat Oven : Preheat your oven to 375°F (190°C). Lightly grease a baking dish to prevent sticking.

Cook Chicken and Vegetables : In a skillet over medium heat, melt the butter. Add diced chicken, season with salt and pepper, and cook until no longer pink, about 5-7 minutes. Remove the chicken from the skillet and set aside.

In the same skillet, sauté the mushrooms and zucchini for 3-4 minutes until just tender.

Prepare the Mixture : In a mixing bowl, combine the cooked chicken, sautéed vegetables, shredded Italian cheese blend, sour cream, green onions, beaten eggs, and dried basil. Mix well to combine.

Assemble the Bake : Transfer the mixture to the prepared baking dish. Spread it out evenly and sprinkle additional cheese on top, if desired, for extra cheesiness.

Bake : Place the dish in the preheated oven and bake for 25-30 minutes or until the top is golden and bubbly, and the eggs are fully set.

Serve : Remove from the oven and let it cool for a few minutes before serving. Garnish with additional green onions or fresh basil for extra flavor.