Preheat your oven to 425 degrees and line a baking sheet with parchment paper.
In a large ziploc bag or a large bowl, add the chicken thighs with 1/4 of olive oil, 2 tsp salt, 1 tsp black pepper, and 2 tsp garlic powder.
Toss to coat.
Transfer the thighs to the baking sheet, skin side up. (leave the excess oil in the bag)
In the same bag, add your halved potatoes, 1 tsp salt, and half tsp black pepper.
Toss to coat and then add to the baking sheet.
Thinly slice your red onion and chorizo and add those to the pan as well.
Zest the entire orange and sprinkly the zest over everything.
Sprinkle everything in the pan with 1 tsp oregano.
Bake for 60 minutes. (or until chicken is cooked through)