To begin, mash together the garlic and Thai chiles using a mortar and pestle, until a paste forms.We'll use a little of this paste for the chicken marinade, and the rest for building the noodles flavor later on. Take a teaspoon of the chili paste and add to a bowl with the chopped chicken thighs. Top with soy sauce, cornstarch, and white pepper. Mix well and set aside to marinate for 10 minutes.
Meanwhile, chop the Chinese broccoli, onion, and red bell pepper. For the broccoli, dice up the stems and then slice the leafy greens.
In a deli container or cup, create the sauce: soy sauce, oyster sauce, fish sauce, brown sugar, and a touch of (optional) MSG.
Pour about half of the vegetable oil into a large skillet on medium heat. Cook the marinated chicken until seared, then set aside.
Prepare the rice noodles per package instructions.Immediately rinse under cold water to stop them from cooking, then drain and set aside. In the same skillet that the chicken was cooked in, sauté the rest of the chili paste in the remaining oil for about 30 seconds on medium heat. Don't breathe this in directly - it will burn your nostrils!
Pour in the onions, bel pepper, the broccoli stalks, and the cooked chicken back into the pan. Cook until the veggies have softened, another 4 - 5 minutes.
Add the drained noodles and sauce to the pan. Let it sit for about a minute or two to caramelize, then begin stirring.
Pour the broccoli leaves and Thai basil, stirring until the greens wilt. Remove the pan from heat.
Top with chopped green onions for garnish. Serve hot and enjoy!