Preheat oven to 400°F (200°C).
In a small saucepan, combine pineapple juice, brown sugar, soy sauce, minced garlic, and grated ginger. Simmer over medium heat until the mixture reduces and thickens slightly, about 6-8 minutes. Set aside the pineapple glaze.
Pat the salmon fillet dry and season both sides with salt and black pepper.
Heat olive oil in an oven-safe skillet over medium-high heat.
Place salmon fillet skin-side down and sear for 3-4 minutes until the exterior is crispy and golden brown.
Flip the salmon and brush the top generously with the pineapple glaze.
Transfer the skillet to the oven and bake for 8-10 minutes, until the salmon is cooked through and flakes easily with a fork.
Remove from oven, drizzle with remaining pineapple glaze, and let rest for 2 minutes before plating.
Plate the salmon fillet centered on a white round plate, drizzle pineapple glaze evenly over the top, and garnish with thin pineapple slices and chopped fresh cilantro on the side.