In the baking dish, mix together the 2 cups rolled oats, 1 cup egg whites, 1.5 cups Greek yogurt, ¼ cup chia seeds, ¼ cup hemp seeds, 1.5 cups pure pumpkin puree, 1 cup milk, ¼ cup coconut sugar, 1 teaspoon vanilla extract, 1 teaspoon cinnamon, and ½ teaspoon salt. Once combined, sprinkle the ¼ cup chocolate chips on top and gently press them into the mixture.