Bring water and a pinch of the sea salt to a boil in a small saucepan.
Whisk in the grits, reduce heat to low, cover, and simmer for 15-20 minutes until creamy.
While grits cook, toss the shrimp in Cajun seasoning, the remaining sea salt, and black pepper.
Heat ghee in a large skillet over medium-high heat.
Add the diced bell pepper and onion, sautéing until softened and slightly charred.
Add the garlic and shrimp to the skillet, cooking for 2-3 minutes per side until the shrimp are pink and opaque.
Spoon the warm grits into a bowl and top with the sautéed shrimp and vegetable mixture.
Garnish with sliced green onions and serve immediately.