Heat a grill pan or outdoor grill to high (about 450°F to 550°F). Meanwhile, place the peppers in a medium bowl, add the olive oil, and toss to coat; set aside.

When the grill is ready, place the peppers on the grill in a single layer, making sure they’re not touching. Grill uncovered, turning occasionally, until the peppers start to char and blister, about 6 to 8 minutes total.

Remove to a serving plate, season immediately with the sea salt, and serve.

https://www.chowhound.com/recipes/grilled-padron-peppers-29876