Steps
1. Heat olive oil in a skillet over medium heat.
2. Season the chicken breast with salt and pepper, then add it to the skillet.
3. Cook for about 5-7 minutes on each side until golden brown and cooked through.
4. Add the diced pineapple and teriyaki sauce to the skillet, cooking for an additional 2-3 minutes until the sauce thickens slightly.
5. Serve the chicken and pineapple mixture over the cooked rice, garnishing with chopped green onion.