If using flank steak, follow same instructions as steak strips.
If using 20 oz steak strips, separate into a single layer and pat dry. Season all over with seasoning rub, 1/4 tsp. salt, and a pinch of pepper. Follow same instructions as 10 oz steak strips in Step 5, cooking in batches, if necessary.
If using diced chicken breasts, follow same instructions as steak strips in Step 2 and Step 5, stirring occasionally until browned and minimum internal temperature is reached, 5-7 minutes.