These types of switch and swaps happen all the time at my house. I usually just don't mention it. As long as I am switching what I planned for one day with what I had planned for another day it does not impact my budget.
My husband was surprised at how little he spent on groceries this week (he did the shopping). He even splurged on something not on the list that was about $9, and the total was still only about $98! Granted we didn't need any of those occasional purchases such as laundry soap, dishwasher soap, shampoo, etc., but still that was nice!
So here is what we are eating this week: