Preheat and prep: Heat your oven to 425°F (220°C). Line a baking sheet with foil or parchment and lightly brush with oil for easy cleanup.
Make the glaze: In a small saucepan, combine mango, honey, chili paste, soy sauce, vinegar, lime juice, garlic, ginger, and sesame oil.
Bring to a gentle simmer over medium heat.
Thicken the sauce: Simmer for 5–7 minutes, stirring often, until the mango softens and the glaze reduces slightly. Mash the mango with a spoon or use an immersion blender for a smoother glaze. Taste and adjust with more chili or lime as needed.
Season the salmon: Pat the fillets dry.
Sprinkle with salt and pepper on both sides. Place them skin-side down on the prepared sheet.
Glaze generously: Spoon about half the mango chili glaze over the salmon, coating the tops and sides. Reserve the rest for brushing later and serving.
Roast: Bake for 8–12 minutes, depending on thickness.
Salmon is done when it flakes easily and reaches 125–130°F (52–54°C) for medium. Thicker center-cut fillets may take closer to 12 minutes.
Broil for shine (optional): Switch to broil for 1–2 minutes to caramelize the glaze. Keep a close eye to prevent burning.
Finish: Brush with a little more glaze.
Let rest 2 minutes, then garnish with cilantro, green onions, and sesame seeds. Serve with lime wedges.