Preheat oven to 450F or 425F convection. Line a baking sheet with parchment paper.
Add tofu crumbles to a kitchen towel and press/squeeze to remove excess moisture. Transfer to ½ of the baking sheet. Add the veggies to the other half. Drizzle the tofu and veggies each with 1 tablespoon olive oil and sprinkle each with ½ tsp salt and toss to coat (keep them separate).
In a small bowl or jar mix together the sriracha, 1 tablespoon soy sauce, and coconut sugar. Pour this over the tofu and toss to coat. Spread everything into an even layer (the tofu will take up more of the baking sheet to be more spread out, it’s okay to overcrowd the veggies). Bake for 20-25 minutes or until tofu is browned/crispy.
Meanwhile, cook your noodles according to the package instructions in a pot of salted water. Reserve at least 1 cup pasta water, then drain and transfer back to the pot. Stir in the tahini, butter, lime, remaining 1 tablespoon soy sauce, garlic (if using), and remaining ½ teaspoon salt until coated.
Stir in the veggies/tofu along with about ¾ cup pasta water and continue to stir vigorously until it transforms into a smooth sauce, adding more pasta water if needed (you can always add hot water if you run out).
Serve topped with nuts/seeds and chopped herbs.