In a small glass bowl, whisk together the coconut aminos, honey, grated fresh ginger, and minced garlic until the honey is fully dissolved.
Pat the chicken thighs dry with a paper towel and season both sides evenly with sea salt and black pepper for maximum flavor.
Heat the toasted sesame oil in a large cast-iron skillet over medium-high heat until it begins to shimmer.
Add the chicken thighs to the skillet and sear for 5 to 7 minutes per side, developing a deep golden crust, until they are cooked through.
While the chicken sears, place the broccoli florets in a steamer basket over boiling water for 4 minutes until they are tender-crisp and vibrant green.
Lower the skillet heat to medium, pour in the teriyaki mixture, and simmer for 2 minutes while tossing the chicken until the sauce becomes a thick, glossy glaze.
Transfer the steamed broccoli to a plate, top with the glazed chicken thighs, and garnish with toasted sesame seeds and sliced green onions.