Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Cut the chicken breast into 1-inch cubes and slice the bell pepper and carrots into bite-sized pieces.
In a small mixing bowl, whisk together the tamari, honey, sesame oil, grated ginger, and minced garlic to create the glaze.
Spread the chicken, broccoli, bell pepper, and carrots across the prepared baking sheet in a single layer.
Drizzle half of the tamari glaze over the chicken and vegetables, then season with sea salt and black pepper.
Toss everything well to ensure an even coating of the sauce and spices.
Roast in the oven for 18 to 20 minutes, or until the chicken is cooked through and the vegetables are tender and slightly browned.
Remove from the oven, drizzle with the remaining glaze, and sprinkle with sesame seeds before serving.