Prepare the pizza dough and sauce according to recipe instructions.
Slice the chicken in half horizontally, resulting in two thin fillets. Drizzle the chicken with the olive oil and lemon juice. Season with oregano, garlic powder, salt and pepper.
Pan fry or grill the chicken until golden and cooked through. Remove from the heat then slice.
In the same pan you used for the chicken, quickly saute the spinach to allow it to wilt then remove from the heat and squeeze out any excess moisture.
Preheat the grill (braai/barbecue) to its hottest setting. I like to have a cooler zone to move the pizza to should it be needed. If you have a grill with a lid/top you can close, even better. Brush the grill grid with a little oil.
Form the dough into pizza bases with your hands, pressing from the middle, forming the pizza as you go. Take care not to thin it out too much.
Transfer the dough to the grid then allow to cook for a few minutes until the dough has started to bubble up. Remove from the grill and place grill side-up on a wooden board or pizza peel.
Top the grilled side with sauce, cheeses, chicken and spinach then carefully transfer the pizza back to the grill. Close the grill if possible and allow to cook for a few minutes until the cheese has melted and there is some color on top.
Remove from the grill, slice, top with basil and serve.