Q.What is happening to my Key Lime Pie Succulent
What is happening to my Key Lime Pie Succulent? I got it a week ago and planted it last weekend. Yesterday it did not have these holes in it. I planted it in a tea cup with pebbles for drainage and soil for cacti. It is in the window with other plants, which do not have these holes in them.

Snails and slugs like to munch on succulent leaves but given that this is an indoor plant it seems unlikely - unless you brought some hitchhikers inside.
What do the holes look like? Do they look like this:
http://i.stack.imgur.com/F0k9R.jpg
If so, it is possible your succulent has anthracnose. More information on anthracnose can be found here:
https://www.gardeningknowhow.com/plant-problems/disease/anthracnose-disease.htm