The Los Angeles Lakers, Chicago Bulls and Miami Heat have been three of the most disappointing teams in the NBA this season. With the 2022-23 NBA season over halfway through, there have been a lot of disappointing teams. Three of the most significant letdowns have been the Los Angeles Lakers, Chicago Bulls and Miami Heat. Why? Lakers: The Lakers are coming off a season where they went 33-49 and missed the postseason, but any team with Anthony Davis and LeBron James is expected to contend for a title. James and Davis have been brilliant, but Davis has missed 23 games…