Mix together the chili powder, cumin, garlic powder, onion powder, paprika, oregano, salt and pepper until well combined. See notes if you want to make your own chili powder! Divide spice mix in to two halves (half for chicken and half for beef)
For the chicken:
In a large bowl, toss together the chicken breasts with the lime juice,olive oil, minced garlic and the spices. Toss until well combined. Either cook immediately or place in the fridge for 10-15 minutes to marinade while making the beef tacos.
To cook the chicken, heat a nonstick skillet over medium high heat. Once the pan is hot, add the chicken breasts all at once, spacing them out. There should be enough oil in the marinade, but if you feel you need it you can add a little olive oil before adding the chicken to the pan.
Cook for a good 5-6 minutes or until golden brown on one side, then flip and continue cooking for another 5 minutes or until golden brown on both sides and completely cooked through.
Let chicken breasts rest for 5 minutes, then slice. This is your taco chicken ready!
For the beef:
Heat the olive oil in a large skillet over medium high heat, then add the onions and cook until softened. Add the ground beef and continue to cook, stirring all the while and breaking pieces apart with a wooden spoon.
When all the beef has browned and cooked through, drain all the extra fat out of the skillet. Return skillet to the heat, and add the remaining half of the spices. Stir through, and add th tomato sauce. Cook a further minute or so until warmed through, then remove from the heat. Beef taco mix is done
To serve:
Serve with tortillas or base of your choice and toppings of your choice. It's fun to do a little DIY taco counter so everyone can top however they like.
Notes
To make your own chili powder, mix together 2 tablespoons of paprika, 2 teaspoons oregano, 1 1/2 teaspoon cumin, 1 1/2 teaspoons garlic powder, 3/4 teaspoons onion powder, and 1/2 teaspoon cayenne pepper (optional). Above recipe is from www.allrecipes.com