Pat the chicken thighs dry with paper towels and set aside.
In a mixing bowl, whisk together the soy sauce, honey, chopped garlic, and chopped ginger until combined.
Place the chicken thighs in the marinade and turn to coat evenly. Let sit briefly while you heat the skillet (or marinate up to 30 minutes if desired).
Heat a skillet over medium-high heat. Add the marinated chicken and sear 7 minutes on one side, then flip and sear about 7 minutes more, or until cooked through and browned.
Transfer the cooked chicken to a plate and let rest for 5 minutes.
While the chicken rests, bring a pot of lightly salted water to a boil and steam or blanch the cut pak choi for about 2 minutes, until just tender. Drain.
Serve the chicken with the steamed pak choi and cooked rice if using, and sprinkle with toasted sesame seeds and a pinch of black pepper.