Line a large baking pan with parchment paper.
In a large bowl combine the oats, protein powder, peanut butter, maple syrup, chia seeds, cinnamon, and a pinch of salt and mix well.
Add 1 tablespoon at a time of water (up to about 3-4 tablespoons total) until the consistency is like a dough and all the oats are coated.
Mix in the chocolate chips.
Using a tablespoon cookie scoop, scoop out the dough onto the cookie sheet.
Roll each scoop into smooth balls by hand and place back on the parchment paper.
Store in the refrigerator in an airtight container for up to 1 week.