Toss artichoke bottoms with 2 teaspoons oil and 2 teaspoons oregano. Place them top-side down on half of a large baking sheet. Spread pancetta in an even layer on the other half. Roast until the artichokes are just beginning to brown and the pancetta is crispy, 12 to 14 minutes.
Meanwhile, whisk mayonnaise, yogurt, lemon juice and water in a small bowl until smooth. Beat eggs and egg whites in a large bowl.
Heat the remaining 2 teaspoons oil in a large non-stick skillet over medium-high heat. Add the eggs and cook, folding and stirring frequently with a heatproof rubber spatula until almost set, about 2 minutes. Remove from the heat and fold in cream cheese, the remaining 1 teaspoon oregano and salt.
To serve, divide the artichoke bottoms among 4 plates. Top each artichoke with equal portions scrambled egg, crispy pancetta and creamy lemon sauce. Garnish with oregano sprigs, if desired.
Note: a shopping tip, artichoke bottoms can be purchased in 14 oz cans found near other canned vegetables. If unavailable, substitute two 14 oz cans rinsed and halved artichoke hearts.
There are 308 calories in 1 serving of Artichoke-Scrambled Eggs Benedict.