Dice the chicken breast into 1-inch cubes and place them in a bowl.
Toss the chicken with cornstarch, sea salt, and black pepper until evenly coated.
In a small jar or bowl, whisk together the honey, tamari, minced garlic, and grated fresh ginger.
Heat the olive oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-6 minutes, turning occasionally until golden brown and cooked through.
While the chicken cooks, steam the broccoli florets for 3-4 minutes until tender-crisp and bright green.
Pour the honey-garlic sauce over the cooked chicken in the skillet.
Simmer the sauce for 1-2 minutes, stirring constantly, until it thickens into a glossy glaze that coats the chicken.
Place the warm brown rice in a bowl and top with the glazed chicken and steamed broccoli.
Garnish with sesame seeds before serving.