Garlic Rosemary Roasted Pork Shoulder

• 6 pound bone in pork shoulder
• 4 tablespoons olive oil divided
• 1 tablespoon paprika
• 2 teaspoons kosher salt
• 1 teaspoon fresh ground pepper
• 6 cloves garlic minced divided
• 2 teaspoon fresh rosemary chopped
• 1 teaspoon fresh thyme
• 5 large carrots peeled cut into large chunks
• 3 pounds red potatoes cut in half or quartered
• 1 large onion cut into chunks

For the gravy

• 3 tablespoons flour
• 3 cups chicken stock
• salt and pepper to taste