1.) Heat a nonstick pan on medium-high heat, add avocado oil.
2.) Add all vegetable ingredients. Stir to cook until the vegetables have somewhat softened (adjust cooking time depending on how crunchy you like your vegetables in fried rice).
3.) Add egg to the pan of vegetables and scramble until the egg is almost cooked through. You may either beat the egg in a separate bowl and pour it into the pan or simply crack the egg into the pan and quickly scramble.
4.) Add leftover cooked rice. Add soy sauce, sesame oil and dark soy sauce (if using) and stir until evenly combined. Transfer fried rice onto a plate or bowl and serve!