Preheat the oven to 400°F (200°C) and lightly grease an 8x8-inch baking dish.
In a mixing bowl, combine the cottage cheese, beaten eggs, Parmesan cheese, oregano, and garlic powder until uniform.
Spread the cottage cheese mixture into the bottom of the prepared baking dish in an even layer.
Bake the base for 15 to 20 minutes until the mixture is set and the edges begin to turn golden brown.
Remove from the oven and carefully spread the marinara sauce over the cottage cheese layer.
Sprinkle the shredded mozzarella cheese over the sauce and top with pepperoni slices and diced bell peppers.
Return the dish to the oven and bake for an additional 10 minutes, or until the mozzarella is melted and bubbling.
Allow the bake to rest for 5 minutes to set before slicing and serving.