Heat oven to 375°F. In 10-inch skillet, cook ground beef over medium-high heat 8 to 10 minutes, stirring occasionally, until thoroughly cooked; drain. Stir in 1 teaspoon of the chile powder, the cumin and pico de gallo; cook 1 minute longer. Remove from heat. Stir in sweet potatoes, 1/4 teaspoon salt and 1/8 teaspoon pepper.