Preheat the oven to 400 degrees. In a large bowl, combine the Brussels sprouts, butternut squash, leeks and olive oil. Season with salt and pepper. Mix completely. Transfer to a rimmed baking dish, spreading the ingredients out evenly and in one layer. Bake for 20 minutes, stir the vegetables, then bake for another 20 minutes or until the vegetables are tender. Meanwhile cook the pasta. Transfer the pasta to a serving dish and mix with the vegetables and top with crumbled goat cheese. Serve immediately and enjoy!