Pre-heat oven to 350 degrees.
Lightly brush corn tortilla triangles with olive oil on both sides and set in a single layer on a baking sheet. Sprinkle sea salt over them and bake for 12-15 minutes, until chips are lightly golden and crispy.
While chips are baking, make red chile sauce. Put tomatoes, onion, garlic, jalapeño, chili powder, cumin, and salt in a blender and puree until smooth.
Add sausage to a 10-inch skillet (I like to use cast iron) over medium-high heat. Cook for 8-10 minutes, breaking sausage up with a wooden spoon or spatula, until it's browned and cooked through. Remove sausage to a separate bowl or plate with a slotted spoon and wipe excess oil out of skillet.
Pour the sauce into the same skillet the sausage was cooked in and turn heat to medium. When sauce comes to a simmer, add tortilla chips and crumbled sausage and toss to coat in sauce. Cook for 1-2 minutes.
Spray a separate skillet lightly with cooking oil and set over medium heat. Add eggs to skillet and cook until whites are set but yolks still runny, 3-4 minutes.
Top chilaquiles with eggs, cotija cheese, and any other desired toppings. Serve.