Preheat oven to 400°F.
In a small bowl, mix together garlic powder, onion powder, paprika, thyme, salt and pepper. Set rub aside. Line a sheet pan with foil and drizzle with olive oil, then lay the chicken thighs on the sheet pan. Drizzle and spread the chicken thighs with 1 tablespoon of olive oil. Then coat the chicken thighs evenly with the rub.
Add mini potatoes, broccoli florets, cauliflower florets, cherry tomatoes, red onion and garlic in a large bowl and coat with olive oil, salt and pepper. Distribute throughout the pan around the chicken thighs. By placing the vegetables around the chicken pieces, they will absorb some of the chicken flavours, making them super tasty.
Bake for another 20-25 minutes until the chicken thighs are cooked through and crispy, golden in colour and the vegetables are crunchy yet tender.
Garnish with parsley. Enjoy!