Place bread cubes on a large rimmed baking sheet. Coat bread generously with cooking spray; toss. Bake at 400° for 10 minutes or until crisp and golden, stirring after 5 minutes. Cool completely.
Place lettuce and next 5 ingredients (through eggs) in a large bowl. Cover and chill, if desired.
Combine vinegar and next 3 ingredients (through salt) in a medium bowl, stirring with a whisk. Gradually add oil, stirring with a whisk. Stir in shallots. Pour dressing over salad mixture; toss gently. Top with croutons, and serve immediately.
Tip: Make it easy on yourself and hard-cook the eggs, cook the bacon, and make the vinaigrette ahead, so all you have to do before dinner is assemble!