How to Make It
Combine olive oil, lemon juice, and 1/4 teaspoon of the salt in a medium bowl. Add strawberries, and toss to combine. Let stand 15 minutes, stirring occasionally.
Sprinkle chicken with chile powder and remaining 1/2 teaspoon salt. Heat grapeseed oil a large skillet over medium-high. Add chicken; cook until chicken is cooked through, about 5 minutes per side. Let stand 5 minutes; chop into small pieces.
Place lettuce and spinach on a platter. Sprinkle with chicken, strawberry mixture, and cashews.