Preheat your oven to 425°F for roasting the vegetables.
Chop the red bell pepper, zucchini, and red onion into bite-sized pieces.
On a baking sheet, toss the chopped vegetables with olive oil, a pinch of salt, pepper, and your favorite fresh herbs.
Roast the vegetables in the preheated oven for 15-20 minutes, until tender and lightly charred.
While the vegetables roast, heat a skillet over medium heat and add the lean ground beef. Break it apart and season with salt, pepper, and mixed herbs.
Cook the ground beef until no longer pink and slightly crispy on the edges, about 5-7 minutes.
Lightly whisk the egg whites and pour them into the skillet with the beef. Stir gently to combine, cooking until the egg whites are just set.
Once everything is cooked, combine the roasted vegetables with the beef and egg white mixture in the skillet. Give a final stir to mix the flavors.
Plate the dish and garnish with additional fresh herbs if desired. Serve warm.