01 - Preheat oven to 400°F. Line a large rimmed baking sheet with parchment paper or foil for easy cleanup.
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 other side of the baking sheet. Drizzle with 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 evenly to coat. Reserve remaining glaze for later use.
06 - Bake for 20 minutes until chicken begins to cook through and vegetables start to soften.
07 - Remove from oven and brush or spoon remaining glaze over chicken. Toss vegetables gently. Return to oven and bake 15 additional minutes until chicken reaches internal temperature of 165°F and vegetables are tender and golden.
08 - Serve chicken and vegetables hot, garnished with additional fresh thyme if desired.