Preheat oven to 400 degrees F and line a 9x13-inch baking pan with aluminum foil. Spray the foil lightly with cooking spray.
Use 8 rings of pineapple to form two rows on the pan.
Place salmon on top of pineapple rings. Sprinkle salmon with salt and pepper.
Dice up remaining pineapple and place in medium sized bowl.
Add melted butter, teriyaki, lemon juice, honey, and minced garlic to bowl. Stir well to combine.
Pour mixture over salmon.
Drizzle sesame oil over the salmon. At this point, you can place the salmon in the refrigerator until ready to cook and serve.
Bake for 35-40 minutes on the center rack of the oven. Salmon should reach an internal temp of 145 degrees F. when done. Use a meat thermometer to ensure you don't overcook the salmon.
Notes
If using smaller filets rather than one slab of salmon, you'll need to adjust the cooking time. Use a meat thermometer!