Score the chicken breasts in a criss-cross fashion, rub with 1 tablespoon of olive oil, a pinch of sea salt and black pepper and the finely grated zest of 1 lime.
Place criss-cross side down in a cold 26cm non-stick ovenproof frying pan and put it on a medium-high heat, while you peel and finely grate the garlic into a bowl.
Squeeze in the juice from 1½ limes, stir in the peanut butter and loosen with enough water to give you a spoonable consistency.
Finely slice the chilli, then mix (as much as you dare! ) through the sauce, taste and season to perfection.
Flip the chicken over, spoon over the sauce, then transfer to the grill, roughly 10cm from the heat, for 5 minutes, or until gnarly and cooked through.
Finely grate over the remaining lime zest, then drizzle with 1 teaspoon of extra virgin olive oil.