You could substitute 6 oz. of tofu for the chicken.
In a soup bowl, add the hot water and miso. Stir to dissolve. Add all the other ingredients except bean sprouts and green leafy vegetables to the miso solution and place in the microwave for a few minutes to cook the vegetables. Take out of the microwave. Add the bean sprouts and shredded green leafy vegetables. Drizzle the toasted sesame oil.