Can I use frozen chicken?
For best food safety, thaw first. USDA guidance is that cooking meat from frozen in a slow cooker is not recommended because the cooker may heat too slowly and keep food in the temperature danger zone too long. Thaw in the fridge overnight, or use the microwave defrost setting, then cook.
Chicken breasts or thighs?
Both work. Breasts shred lean and clean. Thighs are extra forgiving and stay juicy even if you run a little long. Chicken is safe at 165 F, but thighs often shred best around 170 to 175 F (not required, just a texture win).
My chicken is watery. What happened?
Salsa brands vary and chicken releases liquid. After shredding, keep the chicken in the slow cooker, set to HIGH, and prop the lid slightly ajar so steam can escape. Cook 15 to 30 minutes (or longer as needed), stirring once or twice, until it is as saucy as you like. You can also stir in a spoonful of tomato paste to tighten it up fast.
How do I keep it from being bland?
Use a salsa you actually like. Then do the finishing move: salt to taste after shredding and add lime. Acid plus salt is the glow up.
Can I make it creamy?
Yes. Stir in 4 ounces cream cheese (cubed) for the last 20 to 30 minutes on LOW, then mix until smooth. It turns into creamy taco filling that disappears quickly.