Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into 1-inch cubes and place them in a large mixing bowl with the broccoli florets and sliced red bell peppers.
Drizzle the chicken and vegetables with olive oil and season with sea salt and black pepper, tossing until everything is evenly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 18 to 20 minutes until the chicken is cooked through and the vegetables are tender.
While the chicken roasts, whisk together the coconut aminos, honey, minced fresh ginger, and minced garlic in a small saucepan over medium-low heat.
Simmer the sauce for 3 to 5 minutes, stirring occasionally, until it thickens slightly into a glossy glaze.
Remove the tray from the oven and pour the warm teriyaki glaze over the roasted chicken and vegetables, tossing gently to coat every piece.
Transfer the meal to a plate and sprinkle with sesame seeds for a final touch of crunch and flavor.