Prep the Biscuits: Preheat your oven to 375°F. Remove the biscuit dough from the refrigerator and gently separate the biscuits along their seams so each one opens slightly, about 2 minutes total.
Fill with Cheese: Place about half a teaspoon of mozzarella in the center of each opened biscuit, then fold the dough back together and pinch the edges to seal in the cheese completely, creating a smooth ball shape.
Prepare the Garlic Butter: In a small bowl, whisk together the melted butter, garlic powder, Italian seasoning, and salt until well combined, about 1 minute of stirring.
Coat the Bombs: Place the sealed biscuit balls on a parchment-lined baking sheet, then use a pastry brush to coat the top and sides of each bomb with the garlic butter mixture until evenly covered.
Bake to Golden Perfection: Bake for 12 to 15 minutes until the tops are deep golden brown and the cheese inside is melted and oozing slightly from any small gaps, about 13 minutes on average.