Preheat the oven to 400 degrees. Grease a baking pan with half the olive oil.
Arrange, in a single layer, the onions, cauliflower florets, carrots and chicken.
Drizzle the remaining oil over the vegetables and chicken and sprinkle with the salt, pepper, garlic powder and Italian seasoning. Sprinkle the brown sugar.
Pour the balsamic vinegar and rub the chicken.
Take to the oven and bake for 25 to 30 minutes or until done.
With the heat from the oven, the balsamic vinegar will caramelize resulting in a sweet, tangy, and savory glaze that’s to die for.