Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Place the broccoli florets and sliced bell peppers on the baking sheet, tossing them with olive oil, sea salt, and black pepper.
Roast the vegetables for 18-20 minutes until they are tender and the edges are slightly caramelized.
While the vegetables roast, whisk together the tamari, honey, sesame oil, grated ginger, and minced garlic in a small bowl to create the teriyaki sauce.
Season the chicken breast lightly with salt and pepper, then sear in a non-stick skillet over medium-high heat for approximately 6 minutes per side until fully cooked.
Reduce the skillet heat to low and pour the teriyaki sauce over the chicken, turning the meat frequently until the sauce reduces into a thick, glossy glaze.
Slice the chicken into strips and serve immediately alongside the roasted vegetables, garnished with sesame seeds.