- Cook rice according to package directions.
- Heat sesame oil in a medium pan over medium heat for 2 minutes. Add vegetables and sauté for 10 minutes, stirring occasionally. Add ¼ cup of katsu sauce and continue to cook for 2 minutes. Cover vegetables with lid to keep warm.
- Heat vegetable oil over medium heat in a heavy pan or sauté pan. While oil heats, slice chicken breast in half through the side to create 2 thinner pieces.
- Add beaten egg to one bowl and use a second bowl to combine panko and sea salt. Blot chicken with paper towel and dunk into egg, shaking off excess, then dredge in panko mixture to coat.
- When oil reaches 350ºF, carefully add both pieces of chicken and fry for 4-5 minutes on each side using tongs to turn. Set chicken aside on a cutting board and cool for 3 minutes before slicing.
- Serve chicken over rice alongside vegetables and drizzle with remaining katsu sauce.