Heat the olive oil in a small saucepan over low heat. Add the minced garlic, salt, black pepper, and optional red pepper flakes. Cook gently for about two minutes until fragrant.
Remove the mixture from the heat and allow it to cool slightly. Stir in the chopped parsley and set aside while preparing the grill.
Heat your grill or grill pan to high heat. A hot cooking surface helps create a quick sear without overcooking the calamari.
Lightly oil the grill grates to prevent sticking. This small step makes a big difference when cooking seafood.
Pat the calamari completely dry using paper towels. Removing excess moisture is important because it helps the seafood develop a beautiful char.
Place the calamari in a bowl and toss with olive oil, salt, and black pepper. Ensure all pieces are evenly coated.
Place the lemon halves cut-side down on the hot grill. Allow them to cook for about two to three minutes until lightly charred.
Grilling the lemons intensifies their sweetness and creates a richer citrus flavor for the finished dish.
Arrange the calamari directly on the grill. Cook for approximately one to two minutes per side until opaque and lightly charred.
Avoid overcooking. Calamari can become tough if left on the grill too long. The entire cooking process should take no more than four minutes.
Squeeze some juice from the grilled lemons into the prepared garlic oil mixture. Stir well to combine all the flavors.
Taste the dressing and adjust the seasoning if necessary. The balance of lemon and olive oil should be bright and refreshing.
Transfer the grilled calamari to a serving platter. Spoon the garlic-lemon dressing generously over the top.
Arrange the remaining grilled lemon halves around the platter for extra flavor and presentation.