Whisk together the oyster sauce, light soy sauce, dark soy sauce, fish sauce, brown sugar, and chicken broth in a small bowl. Set aside.
2 tablespoons oyster sauce, 1 tablespoon light soy sauce, 2 teaspoons dark soy sauce, 1 teaspoon fish sauce, 1 teaspoon brown sugar, 2 tablespoons chicken broth or water
Heat the vegetable oil in a large skillet or wok over high heat. Add the chicken pieces in a single layer and let them sear undisturbed for about 2 minutes until golden on the bottom. Stir and cook for another 2–3 minutes until browned on all sides and just cooked through. Transfer to a plate.
1 tablespoon vegetable oil, 1 pound boneless, skinless chicken thighs
Add another splash of oil to the same pan. Add the sliced shallots and Thai chilies and stir-fry for about 1 minute until the shallots soften and the chilies bloom in the oil. Add the garlic and stir-fry for 30 seconds until fragrant (don't let the garlic burn).
2 small shallots, 1-3 Thai bird chilies, 2 garlic cloves
Return the chicken to the pan. Pour in the sauce and toss everything together. Stir-fry for 1–2 minutes until the sauce reduces slightly and coats the chicken in a glossy glaze.
Toss in the Thai basil leaves and stir just until wilted, about 30 seconds.
1 handful Thai basil leaves
Spoon over hot jasmine rice and top each portion with a fried egg. Enjoy!