Heat the olive oil in a large fry pan, Add the bacon and cook until it is lightly browned. Remove all but 1 tablespoon of the drippings, then add the onion, red pepper flakes, and garlic. Cook over medium heat until onions begin to soften and the garlic is fragrant. Add the chickpeas and continue to cook, stirring occasionally until they begin to pick up some color,about 5 minutes Add the spinach and cook until it wilts 3 minutes or so.