Preheat your oven to 425°F (220°C).
In a large mixing bowl, combine the chicken thighs, olive oil, minced garlic, oregano, paprika, salt, and pepper.
Add the halved baby potatoes, sliced red bell pepper, and onion to the bowl, and toss to coat in the marinade.
Transfer everything to a large baking sheet, arranging the chicken skin-side up among the vegetables.
Roast in the preheated oven for 35-40 minutes or until the chicken reaches an internal temperature of 165°F (75°C).
Remove the baking sheet from the oven and let it rest for 5-10 minutes before serving.
Serve with lemon wedges and enjoy.