Heat a large skillet or wok over medium heat and add vegetable oil.
Cook chicken until done all the way through. Set aside on a separate plate.
Add onion and other vegetables and cook those until tender.
Push vegetables over to the side of the pan and make room to add and scramble eggs.
After eggs are cooked, stir egg and vegetables together.
Next, add the cooked rice, soy sauce and sesame oil to the veggie mixture. Stir well and add chicken back into the pan. Stir over medium heat until everything is well-heated and combined.
Serve immediately and enjoy!