1. Whisk eggs with a pinch of salt and pepper in a medium bowl.
Heat oil or butter in a nonstick skillet over medium.
Cook pepper and spinach 2-3 minutes until tender.
Pour eggs over vegetables; tilt pan to spread evenly.
Cook 2-3 minutes until edges start to set.
Add tomatoes and cheddar to one half.
Gently fold other half over filling with a spatula.
Cook 1-2 minutes until cheese melts and eggs are fully cooked.
Slide onto a plate; serve immediately.
Notes: You can customize this omelet with any veggies you have on hand—mushrooms, onions, or zucchini work great too! For extra protein, add some cooked chicken or turkey slices. Serve with a side of toast or a fresh salad for a complete meal.