Bait (2000)

A single father prepares for a job interview while his young son, Clint, prepares sandwiches for their lunch. When he goes for the interview, Clint has to wait in a café next door for his Dad. While there he loses their lunch to a homeless man. Clint's Dad returns from the interview to find his lunch gone and confronts the hungry man with unexpected results.

Unfortunately the movie Bait is not yet available on HBO Max.