Preheat your oven or grill to 425 F.
In a bowl, mix ketchup, coconut aminos, and pineapple juice. Set aside.
2 cups ketchup, 2 tbsp. coconut aminos, 4 oz. pineapple juice
To assemble each skewer, place the shrimp with the curve towards you, and place a piece of pineapple in the curve. Then wrap a half-strip of bacon around the outside of the shrimp.
2 lbs. raw shrimp, 1 lb. bacon, 1 fresh pineapple, Small wood skewers
Poke the skewer through the bacon, pineapple, and shrimp, and finally through the opposite end of the bacon. Thread 2 to 3 shrimp onto each skewer.
Brush each skewer with the pineapple-ketchup sauce, making sure they are well coated.
Place the skewers in a roasting tin or on a grill, and cook for 10 to 12 minutes.