Place the spices (dried parsley - fresh chives) into a food processor and pulse a few times, until the spices have been ground up a bit.
Scrape down the sides.
Place the remaining ingredients - greek yogurt, buttermilk, Dijon, and lemon juice - into the food processor and pulse until the ingredients have been fully incorporated.
Scrape down the sides, if needed, and pulse again.
Transfer into a sealable container (like a mason jar) and place in the fridge until you're ready to use it!