1: Preheat oven to 425 degrees F.
2: In a large bowl, combine chicken breast, sweet potatoes, cauliflower, red bell pepper, onion, and olive oil.
3: Add oregano, ground cumin, crushed red pepper, lemon juice, garlic powder, salt, Dijon mustard, and black pepper to the bowl. Mix well.
4: Spread the mixture on a baking sheet.
5: Bake for 40 minutes or until chicken is cooked through and vegetables are tender.
6: Garnish with cilantro and enjoy!
