Heat the oil over medium-high heat in a large heavy skillet, preferably cast iron. Add the garlic cloves and cook, stirring, until golden brown. Remove the garlic from the oil and discard. Cook the squash slices in the hot oil, adding only 1 layer of slices at a time to the pan. Cook for about 3 minutes, or until squash is lightly browned on the first side, and flip over using a spatula or tongs. Cook until squash is lightly browned on the other side and tender all the way through. Season to taste with salt and pepper and transfer first to paper towels to drain, then to a platter. Repeat until all of the squash is used up. Sprinkle with chopped fresh mint, garnish with whole mint leaves and pomegranate seeds, and serve.