As Peggy stands up to clear the dishes in the long shot, most of the bowls have food in them. As she goes around the table collecting the bowls in close up, all of them are empty.
Hank claims Ladybirds mother (a purebred bloodhound) tracked down James Earl Ray.
James Earl Ray actually fled the scene of his murder successfully in Tennessee and was not directly chased by any officials or civilians. He was later arrested in England and never went anywhere close to Texas. Though it is possible Hank was just making up a story to impress Bobby, or was lied to himself.
When Hank and Dale are talking about hearing Minh on the phone, Dale's cigarette becomes transparent.