Pat the king prawns dry with a paper towel and season with sea salt and black pepper.
Heat a large wok or skillet over medium-high heat with half of the toasted sesame oil.
Add the prawns to the hot pan and sear for 2 minutes per side until pink and opaque, then remove and set aside.
In the same pan, add the remaining sesame oil along with the diced carrots, garlic, and ginger, sautéing until fragrant.
Push the vegetables to the side, crack the egg into the pan, and scramble quickly until just set.
Add the chilled brown jasmine rice, frozen peas, tamari, and sambal oelek to the wok.
Toss everything together over high heat for 3 minutes, breaking up any rice clumps until the grains are toasted.
Fold the cooked prawns back into the rice and garnish with sliced scallions before serving.