Heat 1 tablespoon of oil in a wok over medium-high heat. Add the shrimp and stir-fry until pink. Remove and set aside.
In the same wok, add chopped garlic and onions. Stir-fry until fragrant and slightly golden.
Add the cooked rice, breaking up any clumps with the back of your spatula. Stir well to mix with the garlic and onions.
Push everything to one side of the wok. Add the remaining tablespoon of oil, crack in the egg, and let it sit briefly. Gently scramble, then mix it into the rice.
Add the diced carrot, soy sauce, sugar, salt, seasoning powder, and white pepper. Stir-fry until the carrot softens to your liking. Toss in the tomatoes and mix again.
Return the shrimp to the wok, add chopped green onions, and give everything a final toss. Serve khao pad goong with cucumber slices and a lime wedge on the side. Enjoy!