In my jet-lagged state I somehow threw this together with pangasius fish from Costco (nice that it's boneless too).
In your rice cooker, combine rice, water, shiitake mushrooms, carrots, spinach, sesame oil, toasted sesame seeds, gluten-free soy sauce, and a bit of salt. Cook normally.
Place your fish on a baking pan, and make a sauce with sesame oil, gluten-free soy sauce, honey, gochujang, black pepper, garlic, garlic chives, and toasted sesame seeds. Mix and pour over the fish. I would've also added ginger if I'd had it.
Bake 200 C for about 12-13 minutes.
Top the rice and fish with more sesame seeds and garlic chives.