Preheat your oven to 400°F (200°C) and line a large rimmed sheet pan with parchment paper for easy cleanup.
Peel the sweet potato and cut it into 1/2-inch cubes to ensure they cook through at the same rate as the chicken.
In a small mixing bowl, whisk together the honey, minced garlic, tamari, and olive oil until the glaze is well combined.
Place the sweet potato cubes on the prepared sheet pan, drizzle with half of the honey-garlic glaze, and toss to coat evenly.
Roast the sweet potatoes for 10 minutes to give them a head start.
Remove the pan from the oven and add the chicken thighs and broccoli florets to the empty spaces.
Brush the remaining glaze over the chicken and broccoli, then season the entire pan with sea salt and black pepper.
Return the pan to the oven and roast for an additional 18-20 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are caramelized.
Serve immediately, drizzling any extra pan juices over the chicken for maximum flavor.