Instructions:
Preheat oven to 350℉. Line a 12 x 17” rimmed sheet pan with parchment paper.
On sheet pan toss together red and green bell pepper, onion, and oil. Bake, stirring once, until vegetables have softened, about 10 minutes.
While vegetables bake, in a large bowl whisk to combine eggs, cheddar, half-and-half, salt, and pepper. Stir in ham.
Once vegetables are tender, pour egg mixture onto sheet pan, making sure vegetables are evenly dispersed.
Bake until eggs are set, about 15 minutes. Cool slightly and cut into 3½” squares to serve.