Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Peel and dice the sweet potato into 1/2-inch cubes, then toss them on the baking sheet with 1 tsp of olive oil and a pinch of sea salt.
Roast the sweet potatoes for 20-25 minutes, flipping halfway through, until the edges are golden and caramelized.
While the potatoes roast, cut the chicken breast into bite-sized pieces and toss them in a small bowl with the arrowroot powder, salt, and pepper until evenly coated.
Heat the remaining 1 tsp of olive oil in a non-stick skillet over medium-high heat and sear the chicken pieces for 5-6 minutes until browned and cooked through.
In a small jar, whisk together the honey, tamari, and minced garlic, then pour the mixture over the chicken in the skillet.
Simmer the sauce for 2 minutes, tossing the chicken constantly until the glaze becomes thick and glossy.
Steam the broccoli florets for 3-4 minutes until bright green and tender-crisp, then serve immediately alongside the chicken and roasted potatoes.