In a large pot over medium-high heat, heat coconut oil. To the skillet, add onion, garlic and shrimp and cook until onion has softened and shrimp are opaque. Season the shrimp with the next 3 ingredients (salt and pepper through cumin). Pour half of the lemon juice over the shrimp mixture. Add the kale through the onion powder. Stir to combine and cook until the kale is wilted.