Preheat your oven to 425°F and line a large sheet pan with parchment paper for effortless cleanup. Pat your chicken thighs completely dry with paper towels—this step matters because moisture prevents skin from crisping properly.

In a small bowl, whisk together olive oil, minced garlic, oregano, smoked paprika, salt, black pepper, and the zest of one lemon. I make this paste-like because it clings to the chicken better than loose spices, creating little flavor pockets that develop during roasting.

Arrange your chicken thighs skin-side-up on the prepared sheet pan, leaving space around each piece so air can circulate beneath the skin. Rub half the herb mixture directly onto the chicken thighs, working it under the skin slightly—this is where the flavor actually lives during cooking.

Toss your zucchini, bell peppers, and red onion with the remaining herb mixture, then scatter them around the chicken pieces. Cut your lemon into quarters and nestle them among the vegetables; they'll release juice throughout cooking that flavors everything simultaneously.

Roast for 35 minutes until chicken skin appears deep golden and the thickest thigh reaches 165°F at the bone. I always check the internal temperature at the thickest part because that's where bacteria hides, not near the surface where it looks done.

Remove from the oven and let rest for 3 minutes—this brief pause allows juices to redistribute so meat stays moist when you plate it. The vegetables will continue softening slightly during this rest, achieving that perfect tender-but-not-mushy texture.