Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast into one-inch cubes and slice the bell pepper, carrots, and broccoli into uniform bite-sized pieces.
Place the chicken and vegetables on the prepared baking sheet, drizzle with olive oil, and season with sea salt and black pepper.
Toss everything together until evenly coated, then spread into a single layer and roast for 18 to 20 minutes until the chicken is cooked through.
While the chicken roasts, combine the coconut aminos, sesame oil, grated ginger, and minced garlic in a small saucepan over medium-low heat.
Simmer the sauce for 3 to 5 minutes until it reduces slightly and becomes a syrupy consistency.
Remove the baking sheet from the oven, pour the warm glaze over the chicken and vegetables, and toss to coat thoroughly.
Garnish with sesame seeds and serve immediately while hot.