Preheat oven to 375 degrees.
Add diced potatoes to a 9x13 baking dish and drizzle with olive oil. Season with paprika, onion powder, garlic powder, and ½ teaspoon of salt and pepper. Stir to combine.
Roast potatoes for 25 minutes, stirring once halfway through.
About 15 minutes before potatoes are done, add the sausage to a large skillet over medium heat. Brown the sausage, breaking it up as it cooks.
When sausage is cooked through, sprinkle with flour and stir well to combine. Cook 1 minute.
Add milk and remaining salt and pepper to the skillet and cook, stirring constantly, for 6 minutes or until gravy has thickened slightly. The gravy should be thinner than a traditional breakfast gravy as it will thicken in the oven.
Remove potatoes from the oven and stir. Pour the gravy over the top.
Cut the biscuits into 4 pieces each and arrange evenly over the top of the gravy.
Return to the oven for 28-30 minutes or until biscuits are browned and cooked through.