Add the olive oil to the pan, then add the shrimp. Season with salt and pepper. Cook for about a minute or two until the shrimp begins to turn pink. Flip the shrimp over and add the butter and pine nuts. Cook for about another minute or two until the shrimp are cooked through and the pine nuts are starting to turn golden.
Add the orange juice and zest, the vinegar, and the parsley. Stir to combine. Taste and adjust the seasoning as necessary.