Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Toss the broccoli florets with olive oil, half of the sea salt, and half of the black pepper directly on the baking sheet.
Roast the broccoli for 15-20 minutes until the edges are golden brown and the stems are tender.
In a small bowl, whisk together the honey, tamari, sesame oil, minced garlic, grated ginger, and red pepper flakes to create the glaze.
Season the diced chicken breast with the remaining sea salt and black pepper, then sauté in a non-stick skillet over medium-high heat until cooked through.
Pour the honey-garlic sauce into the skillet with the chicken and simmer for 2-3 minutes until the liquid reduces into a thick, glossy glaze.
Plate the glazed chicken immediately alongside the roasted broccoli and serve while hot.