Preheat and prep: Set your oven to 425°F (220°C).
If you plan to broil at the end for extra caramelization, position a rack about 6 inches from the heat source.
Make the glaze: In a small bowl, stir together sweet chili sauce, soy sauce, lime juice, sesame oil, ginger, garlic, and sriracha (if using). Taste and adjust. If you want it tangier, add more lime; saltier, add a splash more soy.
Pat the salmon dry: Use paper towels to remove surface moisture.
This helps the glaze cling and the fish brown. Lightly season both sides with salt and pepper.
Prepare the pan: Line a sheet pan with foil or parchment for easy cleanup. Rub or brush the surface with the neutral oil to prevent sticking.
First glaze: Place the fillets skin-side down on the pan.
Brush the tops and sides with about half the glaze, coating evenly but not so thick that it pools around the fish.
Roast: Cook for 8–10 minutes, depending on thickness. Aim for salmon that flakes at the edges and is just turning opaque in the center. Thicker fillets may need up to 12 minutes.
Broil for caramelization (optional but recommended): Switch the oven to broil.
Brush on the remaining glaze and broil 1–2 minutes, watching closely to avoid burning. You’re looking for a glossy, lightly blistered top.
Rest and garnish: Let the salmon rest for 2–3 minutes. Scatter scallions and sesame seeds on top.
Serve with lime wedges and any pan juices spooned over the fish.