To find the total number of ounces of chips Nancy bought, you need to add the ounces of the barbeque chips and the regular chips together.
Barbeque chips: 52.93 oz
Regular chips: 79.6 oz
Now, add the two amounts:
\[ 52.93 , \text{oz} + 79.6 , \text{oz} = 132.53 , \text{oz} \]
Thus, Nancy bought a total of 132.53 ounces of chips.