Yes, chocolate chips can be a snack.
While primarily used as an ingredient in baked goods like cookies, muffins, and banana bread, chocolate chips are also frequently consumed on their own as a simple, readily available treat. When a quick chocolate craving hits and other desserts aren't available, a handful of chocolate chips can serve as a satisfying snack.
Therefore, whether they're incorporated into a recipe or enjoyed straight from the bag, chocolate chips can definitely qualify as a snack.