In a large bowl, combine the ponzu sauce, soy sauce, honey, sesame oil, garlic, and ginger. Mix well to create the marinade.
Add the chicken thighs to the marinade, ensuring they are fully coated. Cover and refrigerate for at least 30 minutes, or up to 2 hours for more flavor.
Heat the vegetable oil in a large skillet over medium-high heat. Remove the chicken from the marinade, allowing excess marinade to drip off, and place the chicken in the skillet.
Cook the chicken for about 6-7 minutes on each side, or until the internal temperature reaches 165°F and the chicken is nicely browned.
While the chicken is cooking, prepare the rice according to package instructions.
Once the chicken is cooked, remove it from the skillet and let it rest for a few minutes before slicing.
Serve the sliced chicken over a bed of rice, drizzling any remaining marinade from the skillet over the top. Garnish with sliced green onions and sesame seeds.