Toss shrimp with the salt and baking soda and let stand 10 minutes.
Melt the olive oil and butter in a large skillet (preferably 12-inch) and add the garlic to the pan; cook 1-minute, stirring frequently. Add the wine and red pepper flakes and bring to a simmer. Let the wine simmer for about 2 minutes or until reduced by half.
Add the shrimp and cook, stirring frequently, until just cooked through, about 2-3 minutes. Add black pepper to taste and grate the zest of the lemon into the pan. Squeeze the juice from half the lemon into the pan. Taste for seasoning and toss with the parsley and chives. Cut the other half of the lemon into wedges and serve with crusty bread.