Here's what you gotta do.
Preheat your oven to 375 degrees.
Pour some olive oil into the bottom of a pyrex baking pan, just enough to cover the bottom.
mix these together in a bowl:
1 tbs chili power
2 tsp onion powder
2 tsp flour
1 tsp cumin
1 tsp garlic
1 tsp paprika
coat the chicken in your spice mixture thing if your kitchen doesn't smell like cumin you did something wrong.
put the chicken in the pan, and pour a jar of salsa over every single one. use a spoon to spread it around, if you want. it should be kind of evenly coating the chicken. You can use whatever kind of salsa you want, but I use a jar of Chipotle Salsa I get at S-Mart Supermarkets, but I unfortunately can't remember the brand.
bake for 30 to 40 minutes.
optionally, put some shredded cheese on top.
BAM you've got some salsa chicken