Preheat your oven to 375°F (190°C).
Brush the turkey tenderloins with olive oil.
In a small bowl, mix garlic powder, onion powder, paprika, thyme, salt, and pepper.
Rub the seasoning mixture evenly over the tenderloins.
Place the tenderloins on a baking sheet lined with parchment paper or in a baking dish.
Add lemon slices around the tenderloins for extra flavor.
Roast in the oven for 25-30 minutes, or until the internal temperature reaches 165°F (74°C).
Let the tenderloins rest for 5 minutes before slicing and serving.