Preheat oven to 375°F. Arrange baguette slices on a baking sheet and brush with olive oil. Toast for 8–10 minutes until golden. Rub lightly with garlic. Heat a skillet with olive oil and cook calamari for 1–2 minutes until just opaque. In a bowl combine avocado, grapefruit segments, calamari, parsley, lemon juice, salt, and pepper. Spoon mixture onto toasted bread slices and drizzle with olive oil before serving.
Notes
Cook calamari quickly to prevent toughness. Assemble bruschetta just before serving for best texture.