Cook the brown rice according to the package directions until fluffy and set aside.
Dice the chicken breast into bite-sized pieces and toss in a bowl with arrowroot powder, sea salt, and black pepper until coated.
In a small jar or bowl, whisk together the honey, tamari, and minced garlic until well combined.
Heat the toasted sesame oil in a large skillet over medium-high heat until shimmering.
Add the chicken to the skillet and sear for 5-6 minutes, turning occasionally, until golden-brown and crispy on all sides.
While the chicken cooks, steam the broccoli florets for 3-4 minutes until they are bright green and tender-crisp.
Pour the honey-garlic sauce over the chicken in the skillet and simmer for 2 minutes until the glaze is thick and glossy.
Divide the rice and broccoli into bowls, top with the crispy glazed chicken, and garnish with sesame seeds before serving.