Preheat oven to 425°F (220°C) and line a large sheet pan
Toss potatoes, peppers, and onion with half the olive oil, garlic powder, salt, and pepper
Spread veggies in a single layer on the sheet pan
Roast until tender and golden, about 30–35 minutes
While veggies roast, heat the remaining olive oil in a skillet over medium heat
Cook ground chicken, seasoning with Tex-Mex spices, until fully browned and fragrant
Remove chicken and set aside once done
In the same skillet, scramble eggs with salt and pepper until just set
Divide roasted veggies, seasoned chicken, and scrambled eggs evenly into 6–8 meal prep containers
Add optional toppings such as cheese, salsa, and cilantro
Cover and refrigerate or freeze portions for later