Heat olive oil in a large skillet over medium-high heat.
Add the ground beef and diced bell peppers to the skillet, breaking the meat apart with a spatula.
Cook until the beef is browned and the peppers are tender-crisp, about 6 to 8 minutes.
While the beef cooks, whisk together the eggs, cottage cheese, and milk in a small bowl until well combined.
Season the beef mixture with sea salt, black pepper, and coconut aminos.
Reduce the heat to medium and pour the egg mixture into the skillet.
Cook, stirring gently, until the eggs are set and fluffy.
Sprinkle with shredded cheddar cheese and sliced green onions, allowing the cheese to melt.
Serve warm topped with fresh avocado slices.