Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Toss the broccoli florets and sliced red bell peppers with avocado oil, sea salt, and black pepper on the prepared baking sheet.
Roast the vegetables for 15-20 minutes until they are tender and slightly charred at the edges.
While the vegetables roast, cut the chicken breast into 1-inch cubes and toss them in a small bowl with the arrowroot powder until lightly coated.
Heat a large non-stick skillet over medium-high heat and add the chicken, searing for 5-7 minutes until golden brown and cooked through.
In a small jar, whisk together the coconut aminos, honey, toasted sesame oil, minced fresh ginger, and minced garlic.
Lower the skillet heat to medium, pour the sauce over the chicken, and stir constantly for 1-2 minutes until the sauce thickens into a glossy glaze.
Divide the roasted vegetables onto a plate and top with the crispy teriyaki chicken.