Preheat your oven to 350°F (175°C). Lightly coat a baking dish with cooking spray.
In a mixing bowl, combine the cottage cheese, eggs, chopped chives, salt, and black pepper. If using, add grated cheese, spinach/kale, and diced bell peppers. Mix well until all ingredients are evenly incorporated.
Pour the mixture into the prepared baking dish, spreading it out evenly.
Bake in the preheated oven for 25-30 minutes, or until the eggs are set and the edges are golden brown.
Once done, remove from the oven and let it cool for a few minutes before serving.
