Preheat a large frying pan or skillet on a high heat.
Bash chicken with the palm of your hand so that the thigh fillets are an even thickness across. Rub with a little oil. Season.
Pop chicken into the pan and cook for 3-4 minutes on the first side.
Meanwhile using a stick blender or food processor, puree pine nuts (or cashews), garlic, lemon juice, 2 tablespoons water and 2 tablespoons extra virgin olive oil until you have a smoothish sauce. Taste and season.
Turn chicken when well browned and cook on the second side for another 3-4 minutes or until cooked through and no longer pink.
Divide sauce between 2 plates. Top with chicken and serve leaves on the side.