2 tablespoons olive oil
1 medium onion, chopped
1 green bell pepper, seeded and cut into 1/2-inch pieces
1 red bell pepper, seeded and cut into 1/2-inch pieces
1 large carrot, chopped medium
1 jalapeno pepper, seeded and minced, or 1/4 cup drained canned chopped green chiles
2 cloves garlic, minced
1 pound dried lentils, rinsed
1/3 cup tomato paste
1 (15-ounce) can red kidney beans, drained and rinsed
1 (15-ounce) can pinto beans, drained and rinsed
1 (28-ounce) can stewed tomatoes
1/3 cup chili powder
4 teaspoons ground cumin
1/4 teaspoon crushed red-pepper flakes
1/4 teaspoon salt
1/4 teaspoon freshly ground black pepper