1. Preheat oven to 425°F. Remove the skin from the halibut if needed, place on a lined baking sheet and bake until cooked through and flaky (about10-12 minutes).* Break into chunks and set aside. 
2. Cook the pasta in salted water until al dente. Drain and set aside. 
3. While the fish and noodles cook, heat oil over medium heat in a large skillet. Sauté the onions until softened, then add the garlic and cook until fragrant. 
4. Stir in the carrots and cook until they are beginning to soften. Add the broccoli and bell peppers - cook until tender crisp. Adding a little water and covering the skillet with a lid can help cook the veggies more evenly and without sticking. 
5. Add the cooked halibut and pasta. Pour in the sauce and gently toss to combine. 
6. Cover and heat on low until warmed through. Serve warm. 

*All nutritional information is an estimation only. Exact nutritional value depends on exact amounts and ingredients used.