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 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 cover the surface. Reserve remaining glaze for later.
06 - Bake for 20 minutes until chicken begins to cook through and vegetables start to soften.
07 - Remove baking sheet from oven. Brush or spoon remaining glaze over chicken and toss vegetables gently. Return to oven and bake an additional 15 minutes until chicken reaches internal temperature of 165°F and vegetables are tender and golden.
08 - Serve chicken and vegetables hot, garnished with extra fresh thyme if desired.