Preheat oven to 400°F and line a baking sheet with parchment paper.
Toss the diced red bell pepper and zucchini with olive oil, half the sea salt, and half the black pepper.
Spread the vegetables on the baking sheet and roast for 15-18 minutes until tender and slightly caramelized.
While vegetables roast, heat a non-stick skillet over medium heat and add the ground turkey and garlic powder.
Cook the turkey, breaking it into small crumbles, until fully browned and cooked through.
In a small bowl, whisk together the eggs and liquid egg whites until well combined.
Pour the egg mixture into the skillet with the turkey and reduce heat to medium-low.
Gently fold the eggs with a spatula until soft curds form, then stir in the roasted vegetables and baby spinach.
Continue cooking for 1 minute until the spinach is wilted and the eggs are set.
Transfer to a bowl and sprinkle with crumbled feta cheese and the remaining salt and pepper.