Add the ground beef, peppers, onions, garlic, cumin, oregano, salt, and pepper to a Dutch oven or deep non-stick skillet over medium high heat. Cook, stirring the beef to crumble it, until the beef is browned.
Add the tomato sauce and capers and simmer until the peppers and onions are soft, about 10 minutes. Add the olives and remove from heat. Serve alone or with cauliflower rice.
Macros per serving, using 93% lean beef: 286 calories, 7 net carbs, 32 grams protein, 13 grams fat.