Preheat oven to 350°. Line a large rimmed baking sheet with foil and grease with cooking spray. In the center of the foil, lay pineapple slices in an even layer.
STEP - 2
Season both sides of the salmon with salt and pepper and place on top of pineapple slices.
STEP - 3
In a small bowl, whisk together butter, chili sauce, cilantro, garlic, ginger, sesame oil, and red pepper flakes. Brush all over salmon fillet.
STEP - 4
Bake until the salmon is cooked through, about 25 minutes. Switch the oven to broil, and broil for 2 minutes, or until fish is slightly golden. Garnish with sesame seeds and green onions and serve with lime wedges.