Preheat the oven to 400°F (200°C).

In a mixing bowl, combine the olive oil, garlic powder, onion powder, paprika, salt, and black pepper.

Add the chicken breasts to the bowl and coat them with the seasoning mixture.

Lay out four pieces of aluminum foil on a baking sheet.

Divide the mixed vegetables evenly among the foil pieces.

Place a seasoned chicken breast on top of the vegetables in each packet.

Drizzle lemon juice over each chicken breast and vegetables.

Fold the foil over the chicken and vegetables to create a sealed packet.

Bake in the preheated oven for 30 minutes.

Carefully open the foil packets and serve warm.