Season the salmon with salt and pepper. Rub the top with a small amount of oil to prevent sticking or spray with nonstick spray.
Grill the pineapple slice to get dark markings on both sides and it softens. Then chop into small pieces.
In a saucepan melt the butter over medium heat. Saute the garlic until it is fragrant, add in the broth and lemon juice, and bring to a simmer. Stir in the honey until it is dissolved completely. Slowly stir in the cornstarch slurry a little at a time until the sauce thickens to a creamy consistency (use cornstarch slurry as needed to thicken to the proper consistency).
Grill the salmon on the top side first (plump side, not the flat side) getting nice markings. Then flip over onto a piece of foil wrap and cook to an internal temperature of 130 degrees using a thermometer.
Spoon the sauce over the salmon, garnish with parsley and about 1 teaspoon of chopped pineapple. Serve with bread.