Combine dry ingredients: In a large mixing bowl, combine rolled oats, cocoa powder, chia seeds, and protein powder. Stir with a whisk until mixed thoroughly.

Mix wet ingredients: In another bowl, combine peanut butter and honey or maple syrup. Mix until smooth and creamy, about 1-2 minutes.

Combine both mixtures: Pour wet ingredients into dry ingredients and fold together until evenly coated, adding water or more honey if too crumbly.

Chill the mixture: Scoop out mixture to form bite-sized balls on a parchment-lined baking sheet. Refrigerate for at least 30 minutes.

Store the bites: Transfer to an airtight container. Store in the refrigerator for up to one week or freeze for up to three months.