- Add 1 tablespoon of oil to a medium skillet and heat over medium heat. Brush pineapple slices with 1 tablespoon of teriyaki takumi sauce. Add pineapple slices to skillet and sauté for 4-5 minutes on each side to lightly caramelize. Set aside on a small plate.
- Blot chicken slices dry with paper towel. Heat 2 tablespoons of oil in skillet over medium-high heat. Add chicken and brown for 7-8 minutes, stirring occasionally until cooked through. Reduce heat to low. Add teriyaki takumi sauce and toss chicken with tongs to coat. Simmer for 1 minute.
- Layer red onion, pineapple, and chicken on hoagie rolls. Drizzle with additional teriyaki takumi sauce if desired and top with mixed greens and sesame seeds. Serve right away.