In a medium bowl, whisk together the eggs, milk, salt, and black pepper until well combined.
Heat olive oil in a non-stick skillet over medium heat. Add the chopped spinach and bell pepper, sautéing for about 2-3 minutes until softened.
Pour the egg mixture into the skillet with the vegetables. Cook, stirring gently, until the eggs are fully set, about 3-4 minutes. Add the diced tomatoes and shredded cheese, stirring until the cheese is melted.
Remove the skillet from heat and divide the egg mixture evenly between the two tortillas.
Roll each tortilla tightly, folding in the sides as you go to create a wrap.
If desired, place the wraps back in the skillet and toast for 1-2 minutes on each side until golden brown.
Slice in half and serve warm.