📖 Instructions

1. Before you begin, preheat your oven to a hearty 400°F (200°C). This ensures that your sheet pan is going into a nice, hot oven, which is key for getting those perfectly roasted, slightly crispy edges on your chicken and veggies. Line a large, sturdy baking sheet (or two, if you're making a bigger batch to avoid overcrowding) with parchment paper. Trust me, this small step makes cleanup an absolute breeze.
2. First up, let's get those potatoes prepped. Wash about 1 pound of small Yukon gold or red potatoes thoroughly. You don't need to peel them! Cut the potatoes into 1-inch pieces. The goal here is uniformity; try to make them roughly the same size so they cook evenly. If some pieces are too big, they'll still be hard when the rest are done. Place the cut potatoes into a large mixing bowl. Toss them with 1 tablespoon of olive oil, a good pinch of salt (about 1/2 teaspoon), and 1/4 teaspoon of black pepper. Give them a really good mix so every piece is lightly coated.
3. Now for the other wonderful veggies! While the potatoes are getting acquainted with their seasoning, chop 1 head of broccoli into bite-sized florets, slice 1 red bell pepper and 1 yellow bell pepper into 1-inch strips, and cut 1 small red onion into wedges. Try to keep these pieces relatively uniform as well, similar to the potato size, for even roasting. Add these colorful veggies to the bowl with the seasoned potatoes. Don't add more oil just yet.
4. Time to get the chicken ready. You'll need about 1.5 pounds of boneless, skinless chicken thighs or breasts. If using breasts, cut them into 1.5-inch chunks to match the cooking time of the vegetables. If using thighs, you can leave them whole or cut them in half if they're particularly large. Pat the chicken dry with paper towels; this helps it brown nicely. Add the chicken to the bowl with the potatoes and veggies.
5. Now for the star flavor! In a small bowl, whisk together 2 tablespoons of olive oil, the zest of 1 whole lemon (make sure to only get the yellow part, the white pith is bitter!), the juice of 1/2 of that lemon, 1 teaspoon of dried rosemary (or 1 tablespoon fresh, finely chopped), 1 teaspoon of dried thyme (or 1 tablespoon fresh, finely chopped), 1 teaspoon of garlic powder, 1/2 teaspoon of salt, and 1/4 teaspoon of black pepper. Give it a good whisk until everything is combined.
6. Pour this lovely lemon-herb mixture over the chicken and vegetables in the large mixing bowl. Now, roll up your sleeves and get your hands in there! Use your hands to thoroughly toss everything together, ensuring that every piece of chicken and every veggie is beautifully coated in the seasoning. This hands-on approach really helps distribute the flavors evenly. It might seem a little messy, but it’s worth it!
7. Spread the seasoned chicken and vegetables in a single layer on your prepared baking sheet. It's really, really important not to overcrowd the pan. If the ingredients are piled on top of each other, they'll steam instead of roast, and you'll end up with soggy veggies instead of crispy ones. If you're doubling the recipe or have a smaller sheet pan, use two sheets to give everything space.
8. Slide the baking sheet into your preheated 400°F (200°C) oven. Roast for 25-30 minutes, or until the chicken is cooked through (reaching an internal temperature of 165°F/74°C) and the vegetables are tender and slightly caramelized. Halfway through the cooking time (around 15 minutes in), pull the sheet pan out and give everything a good stir or flip with a spatula. This helps ensure even browning and cooking on all sides.
9. Once everything is beautifully golden and cooked to perfection, carefully remove the sheet pan from the oven. Garnish with a sprinkle of fresh parsley, if you have some on hand, and a few extra squeezes of fresh lemon juice from the remaining half lemon. This adds a burst of freshness right before serving.
10. Serve your delicious Sheet Pan Lemon Herb Chicken and Veggies immediately. It’s a complete meal all on its own, but it also pairs wonderfully with a simple side salad or a scoop of quinoa if you want to stretch it a bit further. Enjoy the incredible flavors and the remarkably easy cleanup!