Spicy Pork with carrot

2 lbs pork , cut into chunks 1 cup flour 2 teaspoons chili powder 1 teaspoon garlic powder 1 1/2 teaspoons cumin 3 onions , roughly chopped 1 lb baby carrots[...]

6 tablespoons vegetable oil, divided (plus more if needed) 1 1/2 cups chopped onions 1 cup diced carrot (1/2-inch dice) 2 tablespoons minced serrano peppers 3[...]