To make the sauce mixture, in a bowl, combine the low-sodium soy sauce, 1/3 cup water, rice wine vinegar, honey, and chili black bean paste. Set aside.
Place the chicken thighs in a shallow bowl. Pour about 8 tbsp of the sauce mixture over the chicken thighs and let marinate for at least 10 minutes.
Heat the oil on a pan over medium high heat. Cook the marinated chicken thighs for about 7-10 minutes per side, or until cooked thoroughly, depending on the thickness of the chicken thighs. Remove the chicken from heat and set aside.
To prepare the cornstarch slurry, combine 1 tbsp of cornstarch and 2 tbsp of water in a bowl and set aside.
Pour the rest of the sauce mixture (there should be about 1 cup left) into a pan and heat over medium high heat. When the sauce starts to boil, add the cornstarch slurry while continuously stirring. Stir until sauce comes back to a boil and thickens. Remove from heat and pour over the cooked chicken thighs.
Top with chopped cilantro and green onions and serve with a bowl of rice.