While your vegetables are roasting, whisk the tahini with 1/2 cup warm water. Season generously with salt, pepper, and a big squeeze of lemon juice. It should taste delicious. Set aside while you cook your noodles in a large pot of well-salted water, per package instructions. Drain the noodles, and toss on a large platter with the tahini sauce.
Serve topped with the roasted vegetables, a drizzle of the sesame-chile oil, and any of the bonus ingredients you might have on hand.
*Two options here: 1) Add a small splash of toasted sesame oil to your favorite chile sauce. 2) Use something like the Spicy Turmeric Oil at the based of my veg ramen recipe. You're just looking for some sesame-kissed kick to counter the creaminess of the tahini.