Preheat the oven to 400°F (200°C). Grease a large baking sheet with cooking oil or spray.
Place the tomatoes, guajillo chiles, 1/4 white onion, garlic, and optional chiles de arbol in a medium saucepan. Cover with water and bring to a boil over medium-high heat.
Reduce the heat and simmer for 10 minutes until the chiles are soft. Use a slotted spoon to transfer the vegetables to a blender.
Add the chicken bouillon to the blender. Blend until smooth, adding 1 to 2 tablespoons of the cooking water if the sauce is too thick. Taste and add salt if needed.
Cut the corn tortillas into 8 triangles each. Spread them on the prepared baking sheet in a single layer. Brush or spray the tops lightly with oil.
Bake for 15 minutes, or until crisp. Remove from the oven and immediately sprinkle with 1/2 teaspoon of kosher salt.
Heat 1 tablespoon of oil in a large skillet over medium heat. Pour in the blended red sauce and simmer for 2 minutes.
Add the baked tortilla chips to the skillet. Stir gently to coat them in the sauce. If you prefer softer chips, cover the pan for 1 minute.
Fry the eggs in a separate pan until the whites and yolks are firm, reaching a safe internal temperature of 160°F (71°C). Serve the chips topped with the fried eggs, cotija cheese, chopped onion, and cilantro.