Preheat your oven to 400°F (200°C).
In a small bowl, whisk together the miso paste, honey, soy sauce, rice vinegar, sesame oil, ginger, and garlic until smooth.
In a large oven-safe skillet, add the snap peas and sliced bell pepper. Drizzle with olive oil, season with salt and pepper, and toss to combine. Arrange the vegetables around the edges of the skillet.
Place the salmon fillets skin-side down in the center of the skillet. Brush the miso honey glaze generously over each salmon fillet.
Transfer the skillet to the preheated oven and bake for about 12-15 minutes, or until the salmon is cooked through and flakes easily with a fork. The vegetables should be tender-crisp.
Once done, remove the skillet from the oven. Let it cool for a couple of minutes, then garnish with sliced green onions and sesame seeds before serving.
Serve the salmon with the roasted vegetables on the side.