Prepare the rice noodles according to package instructions and drain well.
In a small bowl, mix all sauce ingredients until combined.
Heat oil in a wok or large skillet over high heat.
Add garlic and chili and stir-fry for 10 seconds until fragrant.
Add onion and cook for 1 minute until slightly softened.
Add chicken and fish sauce, stir-frying until cooked through.
Add noodles, green onions, and sauce. Toss well and cook for 1 minute until the Thai Drunken Noodles are evenly coated.
Remove from heat, add basil, toss until just wilted, and serve immediately.