While we're at it, what's your location.
Looks like septoria. Pull the leaves off and get rid of them. It's contagious and will spread so don't just drop them next to the plant. Get rid of them. You can only control it by spraying copper or potassium bicarbonate, but that never worked for me. Common garden sulfur powder has worked.
If you're watering manually, try not to splash the water on the plant.
