A very simple rub for chicken and pork. Made it up myself. I make a large batch of this and just have it on hand for Mexican food emergencies.
1 tablespoon cumin
2 teaspoons chili powder
1 teaspoon garlic powder
1 teaspoon onion powder
1/2 teaspoon salt or seasoned salt
1/2 teaspoon ground chipotle pepper
pinch of ground cayenne pepper
You can go less or more on the cayenne, depending upon your heat tolerance.
Store in an airtight jar and use liberally to rub on meat. Get creative!