My concrete contractor poured my slab to large. I don't know how he held his tape but it is 2" off of the finished exterior walls. I have radiant heat and I want to correct the thermal break before going any further. They also poured the exterior entry way at the same time as the interior. I have attached pictures if anyone can tell me what they would do in my position. Thanks in advance.

Bruce - the walls are relatively easy to fix. Dig up beside the slab and install insulation against the slab edge (this should have been done anyway) and then glue insulation to the expose portion of the slab. Cover the insulation with a cementous stucco or a flashing or a combination of both so that any water running down the wall will flow over the repairs.

The entry is much more problematic. Depending on if it forms part of the structural slab or not, you might just cut it out and re-pour it after insulating.
Alternatively, you might consider enclosing the entry to make an air locked entry.

Where is the house being built?

Northern Wisconsin. I planned on using coil stock around the perimeter of the building. I have already caulked the exterior of the sill for added protection. I attached pictures of the entry way. The entry stoop is connected to the heated garage, interior entry and an interior room on the left. The concrete contractor only used foam on the exterior perimeter of the frost walls.

Is that a 2 X 4 exterior wall in northern Wisconsisn? You could put 2" of rigid foam on the exterior to get flush with the slab and then, another 2" to slip down and provide some coverage to the edge of the slab.