This layered pineapple-lemon cheesecake pie is a delightful combination of tangy lemon and sweet pineapple flavors. The creamy cheesecake filling is sandwiched between a buttery graham cracker crust and a refreshing pineapple and lemon gelatin layer. The pie is chilled to perfection, making it a perfect dessert for hot summer days. Serve it with a dollop of whipped cream and garnish with lemon slices for an extra touch of elegance.