Soaking allows the dried beans to absorb water, which shortens cooking time and aids in digestibility. They will nearly triple in size while soaking. Soak most beans in three times their volume of cold water for 6-8 hours before cooking. Cook mung beans until tender (15-30 minutes depending on how long you soaked them). When ready, Allow to cool a bit.
Preheat oven to 400F or 200C.
To make the chia egg, combine chia seeds and water in a small bowl. Stir well and let sit for a few minutes.
Combine all ingredients for the meatballs. Slightly mash until lentils/beans fall apart and are resembling minced meat.
With clean hands, form the lentil mixture into 1-inch balls (you can use a tablespoon to portion) and arrange them, ½ inch apart, on a parchment-lined baking sheet.
Bake for 25 minutes in preheated oven or until nicely browned.
Meanwhile, make tomato sauce and zucchini pasta.