Chingona means Bad-Ass or really really great. As a form of Chingar (Fuck), it can also be Fucking Bad Ass Food.
This term Chingona or Chingon is slang in Mexico City and other parts of Mexico.
The Barrio Cafe in Phoenix uses this as their slogan since 2002.
This food is really chingona.
Que comida chingona tan rica