Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Place the broccoli florets and sliced red bell peppers on the baking sheet, drizzle with olive oil, and season with half of the sea salt and black pepper.
Roast the vegetables for 15-18 minutes until they are tender and show slight charred edges.
While the vegetables roast, dice the chicken breast into 1-inch cubes and toss them in a bowl with the arrowroot starch and the remaining salt and pepper until evenly coated.
In a small bowl, whisk together the honey, tamari, toasted sesame oil, minced garlic, and grated ginger to create the glaze.
Heat a large non-stick skillet over medium-high heat and add the chicken pieces in a single layer, searing for 3-4 minutes per side until golden brown and cooked through.
Turn the heat down to low, pour the honey-garlic sauce over the chicken, and toss for 1-2 minutes until the sauce bubbles and thickens into a glossy coating.
Divide the roasted vegetables onto a plate, top with the glazed chicken, and garnish with sesame seeds before serving.