Begin by preparing the chicken katsu. Season the chicken breasts with salt and pepper. Dredge each breast in flour, dip in beaten eggs, and coat with panko breadcrumbs.
Heat vegetable oil in a large skillet over medium heat. Fry the chicken breasts for about 4-5 minutes on each side, or until golden brown and cooked through. Remove from the skillet and let rest before slicing.
In a large pot, bring the chicken broth to a simmer. Stir in the miso paste, soy sauce, and sesame oil until well combined.
Add the ramen noodles to the broth and cook according to package instructions, usually about 4-5 minutes.
While the noodles are cooking, bring a small pot of water to a boil. Gently add the eggs and boil for 6-7 minutes for soft-boiled eggs. Remove and place in ice water to cool, then peel and slice in half.
Once the noodles are cooked, divide them into bowls. Ladle the miso broth over the noodles.
Top each bowl with sliced chicken katsu, halved soft-boiled eggs, bean sprouts, corn, and a sprinkle of green onions.
Season with salt and pepper to taste and serve immediately.