In a small saucepan, bring water and sea salt to a boil.
Slowly whisk in the grits, reduce heat to low, cover, and simmer for 15-20 minutes until creamy.
While grits cook, heat olive oil in a large skillet over medium-high heat.
Add diced onion and bell pepper, sautéing until softened and slightly charred.
Stir in the minced garlic and Cajun seasoning, cooking for 30 seconds until fragrant.
Add the shrimp to the skillet and cook for 2-3 minutes per side until pink and opaque.
Stir in lemon juice and remove from heat.
Spoon the creamy grits into a bowl and top with the spiced shrimp mixture.
Garnish with fresh parsley and black pepper before serving.