01 - Warm olive oil in a large saucepan or deep skillet over medium heat until shimmering.
02 - Add chopped onion, diced red and green bell peppers, and celery to the pan. Cook for 5–7 minutes, stirring occasionally, until vegetables soften and onions turn translucent.
03 - Stir in minced garlic and cook for 1 minute until fragrant, being careful not to brown it.
04 - Add rinsed rice to the pan, stirring constantly for 2 minutes until grains are well coated with oil and lightly toasted.
05 - Sprinkle smoked paprika, thyme, oregano, cayenne pepper, black pepper, and kosher salt over the rice. Stir thoroughly to distribute spices evenly.
06 - Pour in vegetable broth and bring mixture to a rolling boil, stirring once to combine.
07 - Reduce heat to low, cover tightly with a lid, and simmer for 18–20 minutes until rice is tender and all liquid has been absorbed.
08 - Remove pan from heat and let stand, covered, for 5 minutes to allow moisture to redistribute evenly.
09 - Fluff rice gently with a fork, fold in chopped parsley, and scatter sliced scallions over the top. Serve immediately while warm.