Perhaps he did not immediately realize that his lunch would become the subject of historical interest to later generations. Do you think he was "in" on the plot with the role to plant the remains of a chicken sandwich? Colonel Sanders was an alleged racist in his plantation suit. Perhaps he was behind this sinister plot and offered free sandwiches as an enticement.
It was his presence on the floor just minutes before the shots that was critical information. The problem about his lunch would only become important to him when it was reported widely to have been the assassin's. For all he knew someone might have seen him on the sixth floor and reported (Rowland).
If the lunch sack and bottle were thought to be related to the assassin why did they not travel with Drain along with the other evidence that night?
Pathetic jokes about fowl play and KFC, forgetful minds and horsing around aren’t serious rebuttal to the points raised. Neither is distraction to the fingerprints in the SN. Just a convenient way to move the topic at hand......look over here.