I have a makeshift greenhouse that lizards absolutely adore. This guy was actually kinda curious about me and came up to check out my hand while filling my seed trays with water.
I'd say it's a skink. We have five lined skinks here, and they look the same. I don't know what they eat, but they stay out of my way, never bite me, usually avoid the house. They don't get into my food or visibly harm the garden, so I like having them around.