Rinse the chicken thighs and pat them dry with paper towels.
Finely chop the peeled ginger and garlic.
In a mixing bowl, combine chopped ginger, chopped garlic, soy sauce, oyster sauce, honey, sesame oil, white pepper, and salt; stir until the honey is dissolved and the marinade is uniform.
Add the chicken thighs to the bowl and rub the marinade over them so each piece is well coated. Set aside to marinate for at least 30 minutes.
Preheat the oven to 375°F (190°C). Line a baking tray with aluminum foil and arrange the marinated chicken thighs in a single layer on the tray.
Bake in the center of the oven for about 40 minutes, until the skin is golden brown and slightly charred and the chicken is cooked through.
If the surface is getting too dark before the chicken is fully cooked, cover loosely with aluminum foil and continue baking until done.
Remove from the oven and serve immediately.