Preheat your oven to 375°F and lightly grease a pie dish with cooking spray or butter.
In a mixing bowl, whisk together eggs, cottage cheese, and milk until smooth.
Stir in cheddar cheese, onion, bell pepper, spinach, garlic powder, paprika, salt, and pepper.
Pour the mixture into the prepared pie dish, spreading the vegetables evenly.
Bake for 35–40 minutes, or until the quiche is set and the top is lightly golden.
Allow to cool slightly before slicing and serving.