Prep the ingredients per the instructions above.
Iced Ginger Tea: Bring water to a simmer in a small pot. Remove from heat and steep ginger tea bags for 10 minutes. Remove the tea bags, let cool, then refrigerate until ready to serve over ice.
Make Cookies: Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper. In a medium bowl, mash the banana until smooth. Stir in vanilla and cinnamon until well combined. Fold in oats, mixing until evenly coated. Gently mix in dark chocolate chips. Scoop spoonfuls of dough onto the baking sheet and lightly flatten each cookie. Bake for 12–15 minutes, until set and lightly golden. Let cool for 5 minutes before serving.
Cook the Rice: Rinse the rice thoroughly under cold water. Cook according to package instructions. Fluff with a fork, season with salt and pepper, and keep warm.
Prepare the Teriyaki Sauce: In a small bowl, combine the soy sauce, rice wine vinegar (or mirin), sake, and brown sugar. Mix well and set aside.
Cook the Chicken: Season the diced chicken with salt and black pepper. Heat extra-virgin olive oil in a large skillet over medium heat. Add the chicken and cook until browned on all sides.
Pour the teriyaki sauce over the chicken. Reduce heat to medium-low and simmer for about 5 minutes, or until the sauce thickens.
Cook the Broccolini: Bring a pot of water to a boil. Cook the broccolini until tender, 3–5 minutes. Drain and season with salt and pepper.
Serve: Serve the chicken teriyaki over rice. Garnish with scallions and sesame seeds. Serve with broccolini, iced ginger tea, and banana oatmeal cookies.