Question

The enzyme that would be most important for digesting a skinless chicken breast would be

Answer 1

The enzyme that would be most important for digesting a skinless chicken breast would be a PEPTIDASE. 
A skinless chicken breast is a proteinous food and peptidases are enzymes which break down proteins by hydrolysis of the peptide bonds which joined the amino acids of proteins together.

Answer 2

Ezymes perform specific roles. Protease is the one in charge of breaking down proteins.