Season shrimp with blackened seasoning.
Heat oil in a skillet over medium heat.
Cook shrimp 2–3 minutes per side until opaque and scoot to the side of the pan. (may do in batches)
Reduce heat to low and add butter/garlic.
Saute until fragrant and toss the shrimp around to coat.
Add a squeeze of lemon juice and sprinkle over parsley. Remove shrimp and set aside.
In the same pan, melt butter and sauté shallots a few mins.
Add garlic and cook 30 seconds.
Add white wine to deglaze.
Add chicken stock, half & half and pasta.
Bring to a gentle boil, then cover and cook on low 15–20 minutes until pasta is tender and sauce thickens.
Stir in parmesan.
Return shrimp to the pan and toss to combine.