Place all marinade ingredients and 1 of the jalapeños in a blender and process until liquified. This will make approximately 3/4 cup.
Preheat grill on high heat.
Place the remaining jalapeños and shrimp in a plastic zipper bag. Pour in HALF the marinade. Seal bag and massage contents to coat the shrimp & peppers. Let this sit for 20 minutes.
Meanwhile, soak the skewers in warm water for 20 minutes.
Skewer shrimp & jalapeños, alternating a shrimp with a jalapeño piece.
Place on grill and cook about 10 minutes, turning and basting with remaining marinade.