Preheat the oven to 180°C (fan). Line a roasting tray with baking paper. Place the chicken on the tray, drizzle with 1½ tsp olive oil, sprinkle 2 tsp of the taco seasoning and salt, and squeeze over the lemon juice. Rub everything evenly. Bake for 21–22 minutes until the chicken is cooked through, then cut into bite-sized pieces.