Take a pan, preferrable nonstick. Pour oil and let it get hot on medium flame. Till the oil get little hot crush green chili and garlic in a mortar with the help of a pestle. now put this crushed garlic and chili in oil and saute it for few seconds.
Now add carrots to the pan, saute them. Make sure we don't want very soft carrots it should be crunchy. Add broccoli and stir it for few seconds. Now add bell peppers and saute it.
Once the vegetables get a little cooked we will add boiled spaghetti, soya sauce, salt, black pepper mix them nicely.
We will add now thai basil, Italian basil ( just tore them with your hands), and parsley. Mix them nicely. Now add lettuce( chop them in big pieces) to spaghetti. Mix them for few seconds and stop the stove.
Cover the pan with a lid so that spaghetti absorbs all the basil aroma. Thai spaghetti is ready to serve .Enjoy!!!!