Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Peel the sweet potato and dice it into half-inch cubes, then cut the chicken breast into bite-sized pieces.
In a small mixing bowl, whisk together the honey, olive oil, minced garlic, tamari, sea salt, and black pepper.
Place the chicken, sweet potato cubes, and broccoli florets onto the prepared sheet pan.
Pour the honey-garlic glaze over the chicken and vegetables, tossing thoroughly to ensure every piece is coated.
Spread the ingredients out into a single layer so they roast evenly rather than steaming.
Roast for 20 to 25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and the potatoes are fork-tender.