In a large bowl, whisk together lemon juice, olive oil, minced garlic, dried oregano, paprika, salt, and black pepper. Add the chicken breasts and toss to coat thoroughly. Allow the chicken to marinate for 20 minutes or up to 24 hours for more flavor.

Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper. Spread the potato pieces evenly on the baking sheet, drizzle with olive oil, and season with garlic powder, salt, and pepper. Toss to combine and bake for 30 minutes, or until golden brown and crispy, stirring halfway through.

Heat a large skillet over medium-high heat. Remove the chicken from the marinade, shaking off any excess liquid. Place the chicken in the preheated pan and cook for 7-8 minutes on each side, or until golden brown and a meat thermometer reads 165°F (74°C). Once done, remove the chicken from the pan and allow it to rest for 5 minutes before slicing.

Add the zucchini slices to the remaining marinade and toss to coat. In the same skillet used to cook the chicken, add the zucchini with the marinade. Cook on high heat for 5-7 minutes, tossing occasionally, until softened and lightly browned. Season with salt and pepper to taste.

Once all components are cooked, divide the sliced chicken, roasted potatoes, and sautéed zucchini into four meal prep containers. Let them cool before sealing for storage.