Step 1

Season shrimp with salt and pepper. Heat a large, heavy skillet (preferably cast iron) over high; swirl in 2 tablespoons oil. Add shrimp and cook, stirring occasionally, until opaque, 1 to 2 minutes; transfer to a plate. Add remaining 1 tablespoon oil and bell pepper to skillet; cook, stirring, until pepper has softened, about 3 minutes. Add garlic, ginger, pineapple, and scallions; cook 1 minute.

Step 2

Stir jam and vinegar into skillet; bring to a boil and cook until reduced and syrupy, about 1 minute. Return shrimp to pan and toss until coated and heated through, about 1 minute. Season to taste; serve over rice, sprinkled with more vinegar and pepper.