Cook the instant noodles according to package instructions. Drain and set aside, ensuring they remain tender but not overcooked.

Heat oil in a pan over medium heat. Add the sliced jalapeño cheddar sausage and cook until nicely browned.

Add chopped onion and sliced jalapeño. Cook briefly until softened and aromatic.

Stir in soy sauce and black pepper. If extra heat is desired, sprinkle in chili flakes.

Add the cooked noodles and toss gently, allowing them to absorb the flavors without breaking.

In a separate pan, fry the egg until the edges become crisp while the yolk remains soft or cooked to preference.

Serve the noodles in a bowl and top with the fried egg.