Why is the hot water pressure low in my kitchen sink while the cold water pressure remains fine?

The low hot water pressure in your kitchen sink could be due to a clog or blockage in the hot water line, a faulty hot water valve, or a problem with the hot water heater. The cold water pressure remaining fine suggests that the issue is specific to the hot water system. It may be necessary to check and repair the hot water line or heater to restore proper pressure.