Roasted chickens with a new to me rub

Roasted chickens with a new to me rub This recipe is for 1 chicken: 1.5 tsp sea salt 1 tsp black pepper .5 tsp garlic powder 1 tsp paprika 1 tsp chili powder 1 tsp grilled chicken seasoning 1 tsp rosemary 2 Tbsp olive oil Mixed that together and rubbed under skin and all over the outside. Preheat oven to 450, once the chicken is in the oven turn temp down to 375. I go 20 minutes uncovered per lb, so juicy and flavorful