Preheat your oven to 400 degrees F.
Prepare your baking pan by lining a Jelly Roll Pan (10×15) with foil and lightly spray it with cooking spray.
Add the asparagus to the pan. Drizzle with 1 tablespoon of olive oil. Sprinkle with 1 minced garlic clove, ¼ teaspoon of salt, and ⅛ teaspoon of pepper. Toss everything together until evenly coated.
Roast the asparagus for about 4 to 6 minutes, depending on thickness.
While the asparagus is roasting, remove the tails from the shrimp.
After 6 minutes, take the pan out of the oven and push the asparagus to one side.
Add the shrimp to the empty side of the pan. Drizzle them with another tablespoon of olive oil. Season with 2-3 minced garlic cloves, ½ teaspoon of salt, ¼ teaspoon of paprika, ⅛ teaspoon of pepper, and 1/8-¼ teaspoon of red pepper flakes. Toss until everything is evenly coated.
Line the shrimp in a single layer on the pan.
Top the asparagus with 1 tablespoon of cubed butter, evenly spaced. Similarly, top the shrimp with 2 tablespoons of cubed butter.
Roast for an additional 6 minutes.
Once out of the oven, drizzle the dish with lemon juice.
Finally, season with additional salt and pepper to taste.