This pork cut rose 2.1 percent during July.
The same factors at play in the rise in bacon and related products are also behind the increase in pork chop costs.
Lamb and mutton
This index shot up 2.9 percent.
Sawyer attributes part of the rise in lamb prices to high prices in beef, a substitute good.
"As beef gets more and more expensive, there are a lot of products that could be competitive, and that's true for chicken and pork and that's true for lamb as well," he said.
An index for butter ticked up 1.7 percent last month as milk prices also rose 1.4 percent.