Preheat the oven to 425° F. 2 On a large sheet pan, toss the chicken with 1 tablespoon tamari and 1 tablespoon orange juice. Season with pepper. Sprinkle the cornstarch (or arrowroot powder) over the chicken, lightly toss. Bake 15 minutes, To make the sauce. In a bowl, whisk 1/3 cup tamari, 2 tablespoons orange juice, honey, chili paste, garlic, and ginger. When the chicken is ready, pour two-thirds of the sauce over the chicken. Toss and bake another 5 minutes, or until cooked through. Switch the oven to broil. Broil 1-2 minutes, until the chicken chars on the edges. If desired, spoon over the remaining sauce. Meanwhile, make the yum yum sauce. Combine all ingredients in a bowl. Taste and season with cayenne and salt.To assemble, add the rice to bowls, top with cucumber, avocado, chicken, kimchi, green onions, and a big handful of fried wontons. Spoon over the yum yum.