Step 1

Preheat the oven to 375°F. Spray a 15x10x1-inch baking pan with cooking spray. Set aside. In a large bowl, combine the vegetables, chicken and vinaigrette. Toss to coat. Place the chicken and vegetables in a single layer on a baking pan. They should be touching but not stacked on top of each other or overly crowded. Sprinkle with pepper.

Step 2

Bake until a thermometer inserted in the chicken reads 170° to 175° and the vegetables are tender, 30 to 35 minutes. If anything is cooking too quickly, you can simply remove it from the pan early.

Step 3

If you enjoy a browned crisp on your food, do this extra step. If not, or if you're in a hurry, skip ahead! Preheat the broiler. Slide the pan 3 to 4 inches away from the heat, and broil the chicken and vegetables until lightly browned, two to three minutes. Remove the sheet pan from the oven. (Remember to turn off the broiler!)

Step 4

Let the dish cool slightly, and sprinkle with crumbled feta cheese before serving.