Place chicken in crockpot.
Place peppers & onions on top of chicken.
Sprinkle with taco seasoning
Pour 1/2 jar of salsa over top.
Cover with lid. Cook for 6-7 hours on low, or 4-5 hours on high.
Remove chicken and shred.
place back in crockpot and cook on low for a few minutes.
Heat up tortillas. Garnish fajitas with sour cream, cilantro, pico,and shredded cheese.