Cook grits according to package instructions using chicken stock and milk in place of water; season with salt and pepper, to taste. Stir in 1 tablespoon butter until melted, about 1 minute; set aside and keep warm.
Melt remaining 7 tablespoons butter in a large cast iron skillet over medium heat. Add shallot, and cook, stirring frequently, until translucent, about 2 minutes.
Stir in garlic, thyme and paprika until fragrant, about 1 minute.
Stir in white wine and Worcestershire.
Add shrimp; season with salt and pepper, to taste. Cook, stirring occasionally, until pink and cooked through, about 3-4 minutes.
Stir in 2 tablespoons parsley and lemon juice.
Serve immediately with grits, garnished with remaining 1 tablespoon parsley; if desired.
Notes
*Chicken stock can be used for white wine as a non-alcoholic substitute.