In a small bowl, whisk together the turmeric powder, garlic powder, onion powder, ginger powder, and black pepper.
Pat the jumbo shrimp dry with a paper towel and toss them with half of the prepared spice mixture until evenly coated.
Heat the avocado oil in a large skillet over medium-high heat until shimmering.
Add the shrimp to the skillet in a single layer and sear for 2-3 minutes per side until pink and opaque, then remove and set aside.
In the same skillet, add the broccoli florets, sliced red bell pepper, and kale with 2 tablespoons of water.
Cover the skillet and steam the vegetables for 3-4 minutes until they are tender-crisp and the kale has wilted.
Stir the remaining spice mixture and the cooked brown rice into the vegetables, heating through for 2 minutes while stirring constantly.
Return the shrimp to the skillet, season with Celtic salt to taste, and toss everything together until well combined.
Transfer the mixture to a bowl and serve immediately while hot.