Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the chicken breast into bite-sized pieces and toss in a bowl with arrowroot powder, sea salt, and black pepper until evenly coated.
Place the chicken, broccoli florets, and sliced red bell pepper on the prepared baking sheet in a single layer.
Drizzle the olive oil over the chicken and vegetables, tossing gently to ensure everything is lightly coated.
Roast in the oven for 18-20 minutes, or until the chicken is cooked through and the vegetables are tender with slightly charred edges.
While roasting, combine coconut aminos, honey, grated ginger, and minced garlic in a small saucepan over medium-low heat.
Simmer the sauce for 3-5 minutes until it thickens into a glossy glaze that coats the back of a spoon.
Remove the tray from the oven, pour the glaze over the chicken and vegetables, and toss to coat before garnishing with sesame seeds.