At first, preheat the oven to 400℉.
Wash the russet potatoes to get rid of the dirt, and pat them dry. Wash the asparagus spears and trim any tough ends.
Combine the seasonings in a bowl.
In a large bowl, toss potatoes with a tablespoon of olive oil. Add half the seasonings, some salt, garlic powder, Italian seasoning, and paprika, and stir to coat.
Spread the potatoes on a large greased baking sheet, cover with foil paper (I love to use parchment paper first then cover with the foil), and roast for at least 30 minutes.
Wash asparagus, pat dry with a clean towel, and transfer them to a bowl. Toss the asparagus with the remaining olive oil and spices. Spread the asparagus on one side of the baking sheet next to the potatoes in a single layer uncovered.
Roast the vegetables for 15-20 minutes or longer if needed until the vegetables are tender and juicy.
Once it is done, serve it and enjoy!