While the chicken and eggs cook, prepare the white rice and pickled veggies. Place the vegetables and other pickling ingredients in a pot over high heat. Bring to a boil, then move off the heat. Cover and leave to cool while the chicken cooks. (We like to throw some ice in prior to serving so that they're cold next to the hot chicken).
Once the chicken and eggs are done, remove from the water bath. Set the eggs aside for now. Remove the chicken from the bag and pour the marinade into a bowl–you'll need to use the marinade for the sauce.
Pat the chicken dry with paper towels, season lightly with salt.
Mix the cornflour and water to create a cornstarch slurry, then stir it into the marinade until it's formed a thickened sauce.
Heat a skillet over medium heat and place the chicken in to fry about 2 minutes per side to color. Add the sauce in the last minute on the second side and toss to coat the chicken.
Remove the chicken. Taste sauce for seasoning and sweetness - adding salt or sugar as required. Continue to cook and reduce the sauce for desired consistency and flavor, then remove from heat.
Drain pickled veggies.
Slice chicken and serve over white rice with sauce spooned over and pickles on the side. Create a well in the rice, and crack the egg straight in. Season with salt and pepper and serve.