Mix orange juice, ginger, oil, garlic powder and sea salt in medium bowl. Reserve 2 tablespoons marinade for brushing. Add shrimp to remaining marinade in bowl; toss to coat well. Cover. Refrigerate 30 minutes.
Meanwhile, for the Pesto, place almonds in food processor; cover. Process until finely chopped. Add remaining ingredients; cover. Process until mixture is coarsely chopped. Set aside.
Place shrimp on grill rack sprayed with no stick cooking spray. Grill over medium-high heat 4 to 6 minutes or until shrimp turn pink, turning and brushing with reserved marinade. Serve shrimp with Asian Pesto.