Heat 1 tablespoon of olive oil in a large pot over medium heat. Add the onion and garlic and cook for 3 minutes until softened.
Stir in the serrano peppers, red bell pepper, cumin, and chili powder. Cook for 2 minutes to release the flavors.
Add the lentils and vegetable broth. Bring to a boil, then reduce heat and simmer for 25 minutes, stirring occasionally.
Stir in the corn and continue simmering for 10 more minutes until the lentils are tender. Season with salt and black pepper.
While the stew simmers, heat the remaining tablespoon of olive oil in a skillet over medium heat. Add the tortilla strips and cook for 4 to 5 minutes, turning often, until golden and crisp. Drain on paper towels.
Ladle the stew into bowls and top each serving with crispy tortilla strips and chopped cilantro.