Rinse jasmine rice under cold water until the water runs completely clear, about 2 minutes.
Combine rinsed rice and water in a medium saucepan and bring to a boil over high heat.
Reduce heat to the lowest setting, cover with a tight-fitting lid, and cook for 18 minutes without lifting the lid.
While rice cooks, zest the lime and finely chop the cilantro and scallions.
Remove the saucepan from heat and let stand covered for 5 minutes, then fluff the rice with a fork.
Spread the rice in a thin layer on a sheet pan to cool for 15–20 minutes to prevent mushy texture.
Transfer cooled rice to a mixing bowl and gently fold in olive oil, garlic, lime zest, lime juice, cilantro, and scallions.
Season with sea salt to taste and add optional red pepper flakes or diced jalapeño if using.
Portion rice into 6 glass meal prep containers, ensuring the rice is completely cool before sealing.
Label containers with the date and refrigerate within 2 hours of cooking.