Fry the tortilla strips. Heat 2 tablespoons vegetable oil in a nonstick skillet set over medium-high heat. Add the tortilla strips to the hot oil and fry until crispy, about 4 minutes. Remove the tortilla strips from the skillet and set aside.
Sauté the veggies. Add the remaining vegetable oil to the same skillet and heat it up. Add onions, bell peppers, and jalapeno to the hot oil and cook until softened, about 4 minutes. Stir in the garlic and cook for 20 seconds.
Whisk the eggs. Meanwhile, whisk together the eggs, chili powder, salt, and pepper.
Add the eggs to the skillet. Turn the heat down to medium and add the eggs to the pan. Stir until everything is scrambled together; about 1 to 2 minutes.
Mix in the remaining ingredients. Then, add the salsa to the eggs and stir to combine. Add the cheese and ⅔ of the chopped cilantro; mix to combine. Stir in the tortilla strips and cook for a minute, or until heated through.
Finish and serve. Remove from heat. Top Migas with cilantro, avocado slices, chopped tomatoes, and cotija cheese, and serve.