Season chicken breasts with salt and black pepper.
Coat chicken in flour, then dip in beaten eggs.
Press chicken into panko breadcrumbs until fully coated.
Heat vegetable oil in a frying pan over medium heat.
Fry breaded chicken until golden brown and cooked through.
Remove chicken and drain on paper towels.
Slice the crispy katsu into strips.
Divide steamed rice between serving bowls.
Top rice with sliced katsu and shredded cabbage.
Drizzle generously with tonkatsu sauce.
Garnish with green onions and sesame seeds.