Line a baking sheet with parchment paper. Slice the bananas into 1/4” rounds. Lay half the slices on the lined pan.
Using a spoon, top the banana slices with a dab of peanut butter. Place another slice on top. Freeze for a minimum of 2 hours.
Microwave the chocolate in a glass bowl on HIGH for 1-2 minutes, stirring every 30 seconds, until melted and smooth.
Remove bites from the freezer and dip/roll (using 2 forks) them into melted chocolate. (Work quickly before the bites start to thaw and get mushy, or the chocolate starts to harden). You can choose to completely cover the banana, or dip partially. Arrange the bites back on baking sheet.