Grilled Shrimp Scampi

INGREDIENTS

1 1/2 lb

large shrimp (, shell on (about 28-30))

1/3 cup

extra virgin olive oil

1/4 cup

fresh lemon juice ((about 1 large lemon))

1 tbsp

finely-chopped garlic ((about 2 cloves))

2 tbsp

finely-chopped shallots

1 tbsp

finely chopped fresh parsley

1 tsp

kosher salt

1/2 tsp

freshly-ground black pepper

4 tbsp

unsalted butter

1/4 cup

extra virgin olive oil

1 1/2 tsp

finely-chopped garlic ((about 1 large clove))

1/4 tsp

kosher salt

1 tsp

grated lemon zest

1 tbsp

fresh lemon juice

1 tbsp

thinly-sliced scallions

1 tbsp

finely-chopped fresh parsley

1/4 tsp

crushed red pepper flakes ((optional))