Preheat oven to 425ºF. Brush pita chips with oil and sprinkle with Old Bay. Bake until crispy, 7 to 10 minutes.
Sauté red onions and garlic in remaining tablespoon oil. Wilt in kale, melt in the cream cheese, lemon juice, and add the crab. Toss or stir to combine.
Serve with Old Bay pita chips alongside.