Yes, as long as they still look like you. This is worth stating precisely, because the rules are often misread: the major dating apps prohibit photos that misrepresent you, not photos made with AI. The line is honesty about your appearance, not the tool that produced the image.
The legitimate use is filling gaps in a photo set. Most people can cover two or three slots from their existing camera roll, and the missing ones are predictable: a clean, well-lit face shot, a full-body photo where they do not look uncomfortable, and something in an outfit other than the one they wear every day. Generating those from your own selfies, keeping your face, build, and age accurate, misrepresents nothing.
What does not work is using AI to become someone else. A changed jawline, a different body, or a noticeably younger version of you will produce matches who are disappointed the moment they meet you, which defeats the entire point.
Two practical habits keep it honest. Blend AI-generated shots with real candids so the set as a whole matches who turns up to the date, and complete photo verification on any app that offers it, since a verified badge is exactly the reassurance a good photo set is trying to provide.