Grilled Red Snapper Tacos with Chimichurri

Name: Grilled Red Snapper Tacos with Chimichurri
Ingredients: 1 cup (1 oz./30 g) loosely packed fresh cilantro, tough stems removed; 1/2 cup (3/4 oz./20 g) loosely packed fresh flat-leaf parsley, tough stems removed; 2 garlic cloves; 1 small jalapeño chile, seeded and chopped; 1 tsp. ground cumin; Kosher salt and freshly ground pepper; 1/2 cup (4 fl. oz./125 ml) plus 3 Tbs. olive oil; 2 whole red snappers, about 1 1/2 lb. (750 g) each, scaled and cleaned; 1 lemon, cut into 6 to 8 slices; 8 to 12 flour or corn tortillas, warmed