I saw elsewhere, the spicy fry order triggered Gus by reminding him of the German meeting where it was proposed, and the loose end he had in Germany. That's when he knew where Lalo was
Howard promises he'll work his butt off to get the senior citizens their money ASAP, then is baited into taking the week off over this vendetta. I don't know if that was the intent, but I could see it being the coup de gras in one way.
Mike's guys are going to be on edge and spot Howard's guys tailing Saul. Howard's guy is a goner.