In a food processor, pulse and then blend bananas, dates, vanilla, sea salt, baking soda and baking powder, lemon and chia together until smooth and mixture resembles soft serve with small chewy bits of dates throughout, scraping down the sides with a spoon occasionally. Add whiskey and blend to incorporate. Add frozen raspberries and pulse briefly 3 times to marble the ice cream.
Serve immediately or pour into a plastic tupperware container and seal shut. Freeze sealed container until ready to serve, I don't recommend freezing for more than a few hours.