Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Toss the broccoli florets and sliced red bell pepper with 0.5 tbsp olive oil, sea salt, and black pepper on the prepared sheet.
Roast the vegetables for 15-18 minutes until they are tender and the edges are slightly caramelized.
While the vegetables roast, dice the chicken breast into 1-inch pieces and toss them in a bowl with arrowroot powder until lightly coated.
Heat the remaining 0.5 tbsp olive oil in a large non-stick skillet over medium-high heat.
Add the chicken to the skillet and cook for 6-8 minutes, turning occasionally, until golden brown and cooked through.
In a small bowl, whisk together the honey, tamari, and minced garlic to create the glaze.
Lower the skillet heat to medium, pour the sauce over the chicken, and stir for 1-2 minutes until the glaze is thick and sticky.
Divide the roasted vegetables between plates, top with the honey-garlic chicken, and garnish with sesame seeds.