I looked up aleppo pepper and apparently this is a mix of 3/4 sweet paprika to 1/4 cayenne. So I did that.
This was OK, not offensive, but not mind blowing. I added a bag of spinach just for extra veg, but otherwise cooked as is. Not sure that the conversion tool on this app is great to change things to metric, so maybe that was the issue. But, it was alright!