Preheat oven to 425. Line a baking sheet with parchment paper. Lightly spray paper with cooking spray.
Season cod with paprika and smoked salt. place on prepared baking sheet. Bake at 425 for approximately 20 minutes until fish flakes and internal temperature reaches 145.
sauce
Melt butter in medium-sized fry pan over medium heat. Add shrimp and roasted garlic and fry until shrimp are translucent, about 2 minutes per side. Transfer shrimp to plate.
Add half and half and salt to pan. Reduce heat to medium-low and reduce sauce to desired consistency, stirring often as needed, about 15 to 20 minutes. Return shrimp to pan and cook until thoroughly heated. Top cooked cod with sauce. Add peas and parsley garnish if desired.