Heat olive oil in a large skillet over medium-high heat.

Add potatoes and onion to the skillet.

Cook and stir for 4-6 minutes, or until potatoes are crisp-tender.

Stir in zucchini and sausage.

Cook for 4-6 minutes longer, or until vegetables are tender.

Gently stir in red peppers, tomatoes, salt, and pepper.

Sprinkle with cheddar cheese.

With the back of a spoon, make four wells in the potato mixture.

Break an egg into each well.

Reduce heat to medium.

Cover and cook for 4-6 minutes, or until egg whites are completely set and yolks begin to thicken but are not hard.