Put all the ingredients for the vinaigrette in a blender jar and shake well.
Wash the baby chard or spinach and dry on a kitchen towel.
Cut the ciabatta or baguette into slices about the thickness of a thumb and toast them in the toaster until golden brown. Rub 1 - 2 cloves of garlic generously on both sides, drizzle with olive oil and cut into bite-sized pieces.
Drain the bacon without fat in a hot pan and fry until crispy. Remove and drain on paper towels. Let the fat cool down a little, then add to the vinaigrette and shake well again.
Mix the lettuce and bread cubes in a bowl with about half of the vinaigrette, then distribute on plates. Break the bacon into strips and pour over them.
Peel the skin of 1 - 2 ripe, but not too soft avocados and cut into wedges from the core. Arrange the avocado wedges on the salad and drizzle everything with the remaining vinaigrette.