Very small foundation pour
Never use chicken wire or fiber glass meshing, they don't do anything.

When it comes to non rebar reinforcement you have some options. In your case I would add fibers. This type of reinforcement is called FRC or Fiber Reinforced Concrete.



Steel fibers add tensile strength and have no weak points like rebar does because they are spread throughout the slab. They also improve impact resistance and freeze-thaw damage. 

On the other hand you can also add polypropylene and Nylon fibers, as they do a similar function. I'll add more on this if you need.