Difficulty combining paths with Pathfinder Tool

Here I used a pen tool to create shapes by tracing the white rings of the salmon flesh. (highlighted green)
I wanted to take this shape carve it into the text underneath, reading "SALMON" (in blue) by using the "minus front" feature of the pathfinder.

However, the result only displayed the compound shape of the first letter of the word, with the rest of the word disappearing.

Can someone help me understand what happened, and what I can do to get the result I am looking for?
Thank you!
