Heat a large pot or Dutch oven over medium-high heat. Add the onion and sauté for about 5 minutes, until it begins to soften. Stir in the sliced mushrooms and cook for an additional 2-3 minutes. Next, add the garlic and ginger, stirring for about 30 seconds—just enough to release their aroma without letting them burn.
Pour in the water, Knorr Chicken Bouillon, soy sauce, rice vinegar, oyster sauce, fish sauce, and chili garlic sauce. Stir everything together and bring the mixture to a gentle simmer.
Once simmering, add the chicken thighs to the pot. Let them cook for 20 minutes or until they’re fully cooked and reach an internal temperature of 165°F.
While the chicken is cooking, prepare the noodles. About 10 minutes before you’re ready to serve, cook the noodles according to the package instructions. Drain them and set aside.
Carefully remove the chicken from the pot and slice it up. Add the bok choy to the pot. Let everything cook together for 3-5 minutes until the bok choy is tender.
Divide the cooked noodles into serving bowls, then ladle the hot soup over the top, then slice and add your soft-boiled egg. Serve immediately and enjoy the comforting, flavorful goodness!