How to make it
Make the miso sauce: Whisk the lime juice, miso, and honey in a bowl until well combined. Reserve.
Add vegetable oil to a saute pan over high heat. Once oil is smoking, add beans and peppers. Saute, stirring to char and cook all sides, about 8 minutes.
Remove beans and peppers from heat and transfer to a bowl with the chile oil, 4 tbsp lime-miso sauce, and most of the herbs. Toss to coat and transfer to serving platter. Garnish with remaining herbs and salt to taste.