Combine rolled oats, peanut butter, honey, protein powder, flaxseed, chocolate chips, shredded coconut, and chia seeds in a large bowl; stir until uniform.

If mixture is too thick, add a teaspoon of water at a time.

Scoop 2‑tablespoon portions and roll into balls.

Place on a sheet and chill in the refrigerator for 1–2 hours until firm.

Store in an airtight container in the fridge up to a week or freeze for up to three months.