Tastes are known to differ. What one Chihuahua can’t get enough of may not taste good to another dog.
What the Chihuahua likes to eat is, therefore, a personal question of taste. Sometimes it depends on what the four-legged friend was used to and what food he grew up with. The dogs then often prefer exactly this food or the type of feeding.
Incidentally, there are rarely four-legged friends who despise wet food. This is actually clearly preferred by many Chihuahuas.