Prepare all ingredients as described above.
Make the pico de gallo: In a bowl, combine tomato, red onion, jalapeño (if using), cilantro, lime juice, olive oil, and a pinch of salt. Mix and set aside.
Toast the bread: Toast bread slices to your preference.
Cook the eggs: In a non-stick skillet, melt butter over medium heat. Crack in the eggs, season with salt and black pepper, and cook sunny-side up or to desired doneness, about 2–3 minutes.
Assemble the toast: Spread mashed avocado over each slice of toast. Season with salt and pepper, then top with pico de gallo.
Serve the avocado toast with eggs, add fresh fruit, and orange juice. Enjoy!