Step 1: Preheat the Oven. Start by preheating your oven to 400°F (200°C).
Step 2: Prepare the Marinade. In a mixing bowl, combine the olive oil, 1 teaspoon of Italian seasoning, ½ teaspoon of kosher salt, ¼ teaspoon of black pepper, and ¼ teaspoon of paprika.
Step 3: Season the Chicken. Place the chicken breasts in the bowl with the marinade and coat thoroughly.
Step 4: Assemble the Veggies. On a large piece of aluminum foil, layer the sliced baby potatoes, onion, and minced garlic. Drizzle with olive oil and sprinkle with remaining seasonings.
Step 5: Add the Chicken. Place marinated chicken breasts on top of the veggies and lay lemon slices on top.
Step 6: Add Butter. Cut butter into small pieces and place on top of chicken and veggies.
Step 7: Seal the Packets. Fold the sides of the foil over the chicken and veggies to create a sealed packet.
Step 8: Bake. Place packets on a baking sheet and bake for about 25-30 minutes.
Step 9: Serve and Enjoy. Carefully open packets and serve directly on plates.