Combine all the ingredients for the buttermilk marinade, then add the chicken, and mix to coat. Cover and chill for at least 2 hrs. Will keep chilled for 24 hrs.

Combine the ingredients for the coating, except the eggs, with 1 tsp salt. Mix well. Beat the eggs in a separate bowl. Remove the chicken tenders from the marinade, a few at a time, toss in the coating mix, then turn in the egg, and toss again in the coating mix. Arrange on a baking sheet lined with foil.

For the waffle, combine the the flour, baking powder, bicarb and brown sugar. Add 1/2 tsp each salt and black pepper. Beat the eggs, then gently stir them into the dry mix. Add the buttermilk and mix until smooth, then stir in the melted butter. Mix in the pancetta, if using.

To fry the chicken, heat a saucepan a third full with sunflower oil over a medium-high heat to 175C, or until a piece of bread dropped in browns within 30 seconds. Fry the chicken in batches until golden brown on both sides and cooked through. Transfer to a plate lined with kitchen paper as you go, setting aside to drain. If the chicken tenders are browning too fast, lower the heat.

Cook the waffles in a waffle machine or iron for 5-6 mins until cooked and golden. Cut each waffle in half. Top the bottom halves with the garlic sauce, rocket, tomatoes and chicken tenders, then sandwich with the other half of the waffle. Serve straightaway.