Preheat broiler with oven rack in upper middle position.
Combine 1 1/2 teaspoons oil and potatoes in a microwave-safe bowl; cover with plastic wrap. Microwave at HIGH 3 minutes or until just tender. Uncover; cool slightly.
Combine milk and next 7 ingredients (through egg whites) in a bowl, stirring with a whisk.
Heat remaining 1 tablespoon oil in a nonstick ovenproof skillet over medium-high. Add potatoes; sauté 6 minutes or until browned. Reduce heat to medium-low; add egg mixture, and cook 5 minutes. Top evenly with grilled vegetable mixture. Place pan in oven, and broil 3 minutes or until egg is set. Cut into 8 wedges.