In a small bowl, whisk together the peanut butter, rice wine vinegar, water, sesame oil, tamarind paste, lime juice, tamari, ginger, garlic chili paste, and garlic.
If you have a spiralizer, spiralize the zucchinis. If not, use a vegetable peeler or julienne peeler to slice the zucchinis into thin strips.
In a large bowl, toss together the zucchini, cabbage, red pepper, carrots, scallions, and cilantro. Gently toss in the peanut sauce.
Divide the noodles among bowls. Garnish with peanuts and lime wedges. Serve with Sriracha, if using.