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Cryptography plays a pivotal role in safeguarding data from unauthorized access. Various encryption techniques have been developed and implemented to secure data during transmission through robust encoding measures across diverse systems, contributing to standardizing cryptographic practices. Previous studies have introduced several algorithms that focused on augmenting encryption security, such as the Key Scheduling Algorithm (KSA), S-Boxes customized to incorporate key, and PT dependencies within the RC4 algorithm. These S-Boxes were later expanded by integrating Henon Chaotic Maps and Logistic Chaotic Maps. The main objective was to create distinct S-Boxes with high-strengthening security features of the Advanced Encryption Standard (AES) algorithm. Different evaluations, such as tests for nonlinearity, Avalanche Effect (AE), the Strict Avalanche Effect (SAE), and Execution Time Performance Efficiency in percentage (ETPE %) were employed to assess the robustness of these S-Boxes. This paper is dedicated to evaluating the robustness of different S-Boxes using Bit-Independent Criteria. We incorporated five distinct S-Boxes into the AES algorithm, presenting an innovative approach. The novelty of our work lies in applying Bit-Independent Criteria tests, quantitatively measuring the strength of each S-Box individually. Tests show that the S-Boxes produced through chaotic maps noticeably strengthen encryption. The Henon based S-Box, using secret key "0123456789ABCDEF", achieved an average BIC value of -0. 009, while the standard AES S-Box recorded -0. 04, indicting a relative improvement of approximately 77. 5 % in the output bit independence. Similar gains appeared with Logistic map-based S-Boxes under various key settings. By utilizing the Bit-Independent Criteria, our research aims to offer a comprehensive assessment of the S-Boxes' effectiveness in enhancing AES encryption security. This endeavor ultimately contributes to advancements in secure data transmission practices. Overall, our results demonstrate that chaotic S-Box design boosts AES security and guides future work on tougher cryptographic schemes.