Cut the chicken breast into bite-sized pieces and season evenly with the sea salt, black pepper, garlic powder, and dried oregano.
Heat the extra virgin olive oil in a large skillet over medium-high heat until shimmering.
Add the chicken pieces to the skillet and sear until golden brown on all sides, about 5 minutes, then remove the chicken and set it aside on a plate.
In the same skillet, add the jasmine rice and toast for 1 minute while stirring constantly to coat the grains in the remaining oil and pan drippings.
Pour in the chicken broth and lemon juice, using a wooden spoon to scrape up any browned bits from the bottom of the pan for maximum flavor.
Return the chicken to the skillet, bring the liquid to a gentle boil, then reduce the heat to low and cover with a tight-fitting lid.
Simmer for 12 minutes, then quickly lift the lid to place the asparagus spears on top of the rice and chicken.
Replace the lid and continue cooking for another 3 to 5 minutes until the rice is tender, the liquid is fully absorbed, and the asparagus is bright green.