Cut chicken thighs into bite-size pieces.
Season the chicken with salt and pepper.
Heat butter and cooking oil in a pan over medium heat.
Spread the chicken thighs out evenly and grill until golden brown on both sides.
Add Zicoba sauce (gochujang, soy sauce, sugar, minced garlic, etc.) and stir-fry.
Continue cooking over medium heat, turning the chicken frequently to let the sauce soak in.
When the sauce thickens and the chicken has a smoky flavor, transfer to a plate.