01 - Preheat the oven to 425°F (220°C).
02 - In a bowl, toss halved potatoes with olive oil, salt, pepper, rosemary, and minced garlic. Spread evenly on a baking sheet, cut side down. Roast for 35–40 minutes, flipping halfway, until golden and crisp.
03 - While potatoes roast, combine olive oil, paprika, garlic powder, oregano, salt, pepper, and lemon juice in a bowl. Add chicken breasts and coat thoroughly. Let marinate for at least 10 minutes.
04 - Preheat a grill or grill pan over medium-high heat. Grill chicken breasts for 5–6 minutes per side, or until cooked through and internal temperature reaches 165°F (74°C). Rest for 5 minutes, then slice.
05 - Serve grilled chicken alongside crispy roasted potatoes. Garnish with chopped parsley and lemon wedges.