Good Slab Bacon.

Chop bacon ( as much as you want, you can't go wrong with too much bacon)coarsely, cook until done but not burnt. Set aside.
Chop chicken breasts into 1-2" cubes, brown in remaining bacon fat or drain fat and use olive oil for those health conscious people, but why would you throw all that flavor away. brown in small batches to insure even & thorough cooking.
Roughly chop Scallions, green & white parts, or shallots/onions/leeks.
On medium heat, place all ingredients in saute pan and add enough butter to make a sauce. Of course a little white wine and chicken broth are my usual additions,but not necessary. Top with chopped parsley and serve over rice.