Spray a 6 quart crock pot with a non stick spray.
Place onions in bottom of crock pot.
Next add chicken breasts, garlic, seasonings, pepper, jalapenos, Rotel and green enchilada sauce.
Cover and cook on high for 5-6 hours or low 8 hours.
Remove chicken and enjoy, or shred and use to make chicken enchiladas, chicken flautas.