Add the bacon and cook over moderate heat, stirring occasionally, until most of the fat has been rendered.
Spoon off all but 1 tablespoon of the fat from the skillet.
Stir in the garlic and whole chiles and cook until fragrant, about 1 minute.
Add the shrimp, season with salt and pepper and cook over moderately high heat, stirring occasionally, until they are pink and curled, about 3 minutes.
Add the vermouth and cook until nearly evaporated, about 1 minute.