In a large cast iron skillet over medium heat, brown the ground beef while breaking up clumps with a wooden spoon until it's fully cooked, about 8-10 minutes. Drain off any excess fat.
Add the scallions and green chiles to the skillet and give everything a good stir. Turn off the heat.
In a medium bowl, whisk together the eggs. Stir in the cheddar cheese. Pour the egg and cheese mixture over the beef mixture in the skillet.
Place the skillet in the oven. Bake until the eggs are fully cooked through (test with a knife through the center), about 10-12 minutes.
Serve immediately as is or topped with keto-friendly salsa.