1To make the burgers: add the first 5 ingredients to a large bowl; thoroughly combine, using your hands. Form mixture into 6 patties, each 1 inch thick. Lightly oil the grill or skillet over med-high heat; cook to desired degree of doneness; at least medium, about 4 minutes per side.
2To make the sauce: add sauce ingredients to a food processor; process until smooth.
3Serve it up: wrapped in warm lavash; top with Orange Chipotle Sauce and iceberg lettuce leaves.