Preheat the oven: Set it to 425°F (220°C). A hot oven is key for crispy cauliflower and golden chicken skin.

Prep the pan: Line a large rimmed baking sheet with parchment for easy cleanup, or lightly oil it. Make sure the pan is big enough so everything can spread out.

Make the garlic-herb mixture: In a bowl, combine olive oil, minced garlic, lemon zest, half the lemon juice, chopped herbs (or dried seasoning), smoked paprika, red pepper flakes if using, 1 teaspoon salt, and 1/2 teaspoon black pepper. Stir to form a loose paste.

Season the chicken: Pat the chicken dry. Rub 1–2 tablespoons of the mixture under the skin (if using thighs) and all over the surface. Place on the baking sheet, skin side up.

Toss the cauliflower: In the same bowl, add the cauliflower florets and any optional veggies (like red onion). Toss to coat with the remaining mixture. Add a splash more olive oil if it looks dry. Season with a pinch of extra salt.

Arrange on the pan: Spread the cauliflower around the chicken in a single layer. Avoid stacking—crowding leads to steaming, not roasting.

Roast: Place the pan on the middle rack. Roast for 25–35 minutes, depending on your chicken. Thighs usually take 30–35 minutes. If using cutlets, start checking at 20–25 minutes.

Check doneness: The chicken is done when the internal temperature reaches 165°F (74°C) and the juices run clear. The cauliflower should be browned at the edges and tender in the center.

Finish and brighten: Drizzle the remaining lemon juice over everything. Add olives, capers, or Parmesan if you like. Let the chicken rest for 5 minutes before serving.

Serve: Sprinkle with fresh parsley. Pair with a simple green salad, quinoa, or warm crusty bread to catch the juices.