In a small bowl, combine the spices. Mix chili powder, paprika, cumin, oregano, garlic powder, brown sugar, salt, and pepper in a bowl.
Mince the garlic and add to the spice mix. Mix thoroughly to combine.
Add the shrimp to a medium bowl and add the spice mixture. Toss shrimp until evenly coated and then set aside.
In a skillet over medium-high heat, add the olive oil until heated through. Add the shrimp in a single layer and cook for 2 minutes on each side or until blacked and crisp.
Serve warm over rice, noodles, salad, or use in tacos or wraps.