Heat the olive oil in a large skillet over medium-high heat. Add in the ground beef and diced onion and crumble the beef with a wooden spoon. Add in 1 tablespoon of chili powder, 1 teaspoon of cumin, and season with salt and pepper. When the beef is nearly cooked through add in the garlic and cook for another minute. Pour it out onto a plate and wipe out the skillet. Add the diced sweet potato, fire-roasted tomatoes, green chiles, water, 2 teaspoons of chili powder, 1 teaspoon cumin, salt, and pepper to the skillet.
