In a mixing bowl, whisk together the Greek yogurt, honey, and vanilla extract until fully smooth and combined. This only takes about a minute, and you want the mixture to be completely lump-free before you start layering it into your jars.
Spoon a layer of the yogurt mixture into the bottom of each jar, followed by a sprinkle of granola and a small drizzle of almond butter. Repeat this layering once more until your jars are nearly full, finishing with a smooth top layer of yogurt.
Combine the dark chocolate chips and coconut oil in a microwave-safe bowl, then microwave in 20-second bursts, stirring each time, until fully melted and glossy. This usually takes about 45 to 60 seconds total depending on your microwave.
Spoon the melted chocolate into a small spiral shape right on top of each parfait. Take your toothpick and drag it from the center of the spiral outward in straight lines, repeating around the circle until it forms a clean web pattern.
Place a candy eyeball or two and a small candy spider on top of each parfait for that final spooky touch. Pop the jars in the fridge for about 15 minutes so the chocolate web sets before serving.