In a large bowl or platter, or on individual plates, arrange spinach and Romaine.
Top with strawberries, celery, feta, almonds and chicken.
Drizzle with poppy seed dressing, to taste. Serve immediately.
Notes
You can quickly toast almonds (or other nuts) by stirring them in a dry skillet over low heat until fragrant. For an even easier method, I place the almonds on a microwave-safe plate and cook on HIGH for a total of about 1 ½ - 2 minutes, stirring every 30 seconds. You'll know they're done when they're browned and fragrant. No matter which toasting method you use, keep a close eye on them because nuts can burn very quickly! Season the warm almonds with a little bit of salt.
Instead of a rotisserie chicken, try boiled chicken, roasted chicken or grilled chicken.
Just about any lettuce or greens will work, so feel free to substitute with your favorites.
Use blueberries, blackberries, raspberries or peaches in lieu of the strawberries.