Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast into 1-inch cubes and chop the broccoli and bell pepper into bite-sized pieces.
Place the broccoli and bell pepper on the baking sheet, drizzle with the olive oil, and season with sea salt and black pepper.
In a small bowl, whisk together the coconut aminos, honey, minced ginger, and minced garlic until the glaze is well combined.
Roast the vegetables for 10 minutes, then remove the tray from the oven and add the chicken cubes.
Drizzle half of the teriyaki glaze over the chicken and vegetables, tossing gently with tongs to ensure everything is coated.
Return the tray to the oven and roast for another 12-15 minutes until the chicken is cooked through and the vegetables are tender.
Toss the mixture with the remaining glaze and garnish with sesame seeds before serving hot.