Rinse the jasmine rice in a fine mesh strainer until the water runs clear, about 60 seconds. Combine rice, 2.5 cups water, turmeric, cumin, coconut oil, and salt in a medium saucepan. Bring to a boil, stir once, then reduce heat to lowest setting. Cover and cook for 18 minutes. Remove from heat and let steam with the lid on for 10 minutes. Fluff with a fork and spread on a sheet pan to cool quickly for meal prep.
While rice cooks, pat the chicken thighs completely dry. Season both sides generously with salt and pepper.
Heat 1 tbsp neutral oil in a large deep skillet or Dutch oven over medium-high heat. Sear chicken thighs for 4-5 minutes per side until deeply golden brown. You are building flavor here, not cooking through. Remove to a plate.
Reduce heat to medium. In the same pan with the fond, add the minced lemongrass, ginger, and garlic. Cook for 60-90 seconds until fragrant — do not burn.
Add the red curry paste and stir it into the aromatics for 30 seconds until it darkens slightly and smells incredible.
Pour in the full can of coconut milk, fish sauce, coconut aminos, brown sugar, and lime juice. Stir to combine, scraping up all the browned bits from the bottom of the pan. This is liquid gold.
Nestle the seared chicken thighs back into the sauce. Bring to a gentle simmer, reduce heat to low, cover, and braise for 25-30 minutes until chicken is tender and the sauce has thickened slightly. Internal temp should read 185°F for fall-apart texture.
While chicken braises, preheat oven to 425°F. Toss broccolini with avocado oil, garlic powder, salt, and red pepper flakes on a sheet pan. Spread in a single layer and roast for 12-15 minutes until stalks are tender and tips are crispy and charred.
Remove chicken from the sauce and shred or slice into thick pieces. Return to the pan and toss gently in the coconut lemongrass sauce to coat.
Assemble meal prep containers: scoop a generous portion of turmeric rice on one side, arrange saucy chicken next to it, and add charred broccolini alongside. Spoon extra sauce over the rice. Top with fresh cilantro, toasted coconut flakes, and a lime wedge tucked in the corner. Store sealed in the refrigerator for up to 5 days.