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