In a large mixing bowl, combine rolled oats, nut butter, and honey.
Add chocolate chips and chia seeds to the mixture.
Stir until all ingredients are well combined.
If using, mix in shredded coconut.
Taste the mixture and adjust sweetness if necessary.
Refrigerate the mixture for about 10 minutes to firm up.
Scoop out tablespoon-sized portions.
Roll each portion into a ball between your palms.
Place the formed balls on a baking sheet lined with parchment paper.
Store in the refrigerator for at least 30 minutes before serving.