01 - Preheat oven to 400°F. Line a large rimmed baking sheet with parchment paper or foil.
02 - Place chicken breasts on one side of the baking sheet. Drizzle with 1 tablespoon olive oil and season generously with salt and black pepper.
03 - In a small bowl, whisk together honey, cranberries, balsamic vinegar, Dijon mustard, minced garlic, and thyme until well combined.
04 - Arrange potatoes, Brussels sprouts, red onion, and carrots on the remaining side of the baking sheet. Drizzle with 1 tablespoon olive oil and season with salt and pepper. Toss to coat evenly.
05 - Spoon half of the honey cranberry glaze over the chicken breasts, spreading evenly to cover. Reserve remaining glaze for later.
06 - Bake for 20 minutes. Remove sheet from oven.
07 - Gently brush or spoon the remaining glaze over the chicken. Toss vegetables to redistribute and ensure even cooking.
08 - Return to oven and bake for an additional 15 minutes, or until chicken reaches internal temperature of 165°F and vegetables are tender and golden.
09 - Serve chicken and vegetables hot, garnished with additional fresh thyme if desired.