Cover a large griddle with foil and preheat over medium high heat.
Arrange tomatillos, pepper and garlic on the griddle.
Cook until vegetables are toasted and blackened, turning them often as they cook. About 5 minutes for the garlic, 10 minutes for the peppers and 20 minutes for the tomatillos.
Transfer to a bowl and allow vegetables to cool for about 20 minutes.
Place ¾ cup water, roasted tomatillos, roasted pepper, and roasted garlic, along with any accumulated juices, and in a blender.
Process until smooth.
Pour the sauce into a large saucepan and bring sauce to a boil over medium high heat.
Once the mixture is simmering, add the chicken bouillon and stir to combine.
Reduce heat to low and simmer sauce for about 10 minutes or until the sauce thickens slightly.
While the sauce simmers, heat about ¼ inch of vegetable oil in a skillet over medium high heat.
When oil is hot, fry corn tortillas in the oil for about 5-10 seconds per side. Do not overcook tortillas; tortillas should be soft not crispy.
Drain tortillas on a paper towel lined plate and keep them warm.
Remove 1½ cups of the sauce from saucepan and place it in a shallow dish.
Add cooked shredded chicken to the sauce remaining in the saucepan and cook until heated through, about 5 minutes.