In a medium bowl combine crabmeat, zucchini, egg whites and yogurt. Stir in panko, chili powder, black pepper and crushed red pepper.
Form mixture into five ½-inch-thick patties (about ⅓ cup crab mixture per patty). Coat a large nonstick skillet with cooking spray. Heat skillet over medium-high heat. Add patties to hot skillet; cook about 10 minutes or until lightly browned (160°F), turning once halfway through cooking time. Reduce heat as needed to prevent the patties from overbrowning.
Meanwhile, for avocado topper, in a small bowl stir together avocado, chutney and lemon juice.
Serve each crab cake topped with a poached egg. Spoon avocado topper over all. Sprinkle each serving with 1 or 2 dashes of hot pepper sauce. If desired, garnish with snipped fresh cilantro.
Tip: To poach eggs, fill an extra-large skillet half full of water; add 1 tablespoon vinegar. Bring the vinegar mixture to boiling; reduce heat to simmering. Break 1 egg into a cup and slip egg into the simmering water. Repeat with four more eggs, allowing each egg an equal amount of space in the vinegar mixture. Simmer eggs, uncovered, for 3 to 5 minutes or until whites are completely set and yolks begin to thicken but are not hard. Using a slotted spoon, remove eggs from vinegar mixture.