Preheat the oven to 400F and line a rimmed baking sheet with some lightly oiled parchment paper.
Place the meatballs on the baking sheet and bake for about 7 minutes, then turn to the other side and bake for an additional 7 minutes.
When they’ve finished baking place a cut slice of 1" circles of provolone atop each of the meatballs to create the whites of the eyes.
Place one slice of black olive atop each provolone circle to create the irises/pupils of the eyes.
Return the meatballs to the oven for 2-3 minutes or until the cheese has slightly melted. Remove from the oven and set aside.
Meanwhile, bring a large pot of salted water to a boil, add spaghetti and cook according to package directions. Drain well and transfer to a serving platter.
Pour warm marinara sauce over spaghetti, then scatter with meatballs.
Recipe adapted from Budget Delicious.