Leftover Pulled Pork Stew

2 tablespoons olive oil

8 jalapeno peppers, sliced

1 large red bell pepper, sliced

1 large yellow bell pepper, sliced

1 medium white onion, sliced

½ large red onion, sliced

5 cloves garlic, minced

8 cups chicken stock

2 (28 ounce) cans petite diced tomatoes in juice

1 (28 ounce) can tomato puree

8 cups cooked pulled pork

3 (15 ounce) cans black beans, rinsed and drained

2 (16 ounce) cans whole kernel corn, drained

4 tablespoons ground cumin

3 tablespoons chili powder

1 tablespoon ground dried chipotle pepper

2 (1.41 ounce) packages sazon seasoning (such as Goya®)

1 pinch cayenne pepper, or to taste (Optional)

salt and ground black pepper to taste

1 (8 ounce) package grated Cheddar cheese (Optional)

1 bunch fresh cilantro, chopped (Optional)

3 scallions, sliced (Optional)