Marinate the chicken. In a bowl, whisk miso, gochujang, rice vinegar, honey, ginger, garlic, and sesame oil. Add chicken thighs and coat well. Marinate 15–30 minutes (inferred).
Sear the chicken. Heat a pan on medium-high and sear the thighs until caramelized and cooked through, about 6 minutes per side. Remove and set aside.
Sear the cabbage and mushrooms. In a saucepan, add a little oil and sear the quartered Napa cabbage and mushrooms until browned and crisp on the edges. Remove and set aside.
Build the broth. Add garlic, ginger, and green onions. Sauté 1–2 minutes until fragrant.
Simmer. Stir in miso paste, then pour in the bone broth. Add the cabbage and mushrooms. Simmer for 5 minutes.
Assemble your bowl. Add warm rice to a bowl, pour the savory broth around it, top with the caramelized miso chicken, mnushrooms and cabbage.
Garnish. Drizzle with chili oil, green onions, and sesame seeds. Serve hot.