Preheat your oven to 375 degrees F and lightly grease a 9x13 inch casserole dish.
Heat olive oil in a large skillet over medium-high heat. Add cauliflower rice, carrots, bell pepper, onion, garlic powder, parsley, salt, and pepper. Cook until vegetables are softened, about 10 minutes.
In a separate bowl, whisk together Buffalo sauce, mayonnaise, and eggs until smooth.
Combine the sautéed vegetables, shredded chicken, and Buffalo sauce mixture in the prepared casserole dish. Stir to mix well.
Bake in the preheated oven for 20-25 minutes, or until the casserole is heated through and the top is slightly golden.
Serve hot, with optional garnishes such as ranch dressing, extra Buffalo sauce, or chopped green onions if desired.