The deeply flavorful, spiced, and spicy nature of harissa paste (a Moroccan hot pepper paste) makes it the perfect for marinating chicken thighs, taking all the hard work out of building a great marinade. You should know that all harissas are slightly different–some spicier than others, some thicker and pastier than others. I prefer a very spicy, very thick one like NY Shuk’s Signature Harissa, as it really doubles down on flavor, but whatever you can get your hands on will be juuuuuust fine.