I was recently asked to suggest reading lists on (1) epistemology in general, (2) religious epistemology, and (3) Reformed presuppositional/Van Tilian/
I think the following books should get you up to speed on contemporary epistemology in general (and religious epistemology more specifically):
- Robert Audi, Epistemology: A Contemporary Introduction to the Theory of Knowledge (3rd ed.)
 - Ernest Sosa et al, eds., Epistemology: An Anthology (2nd ed.)
 - Matthias Steup et al, eds., Contemporary Debates in Epistemology (2nd ed.)
 - William Alston, Perceiving God
 - Alvin Plantinga, Warrant: The Current Debate, Warrant and Proper Function, and Warranted Christian Belief
 - Richard Swinburne, Epistemic Justification
 - John M. DePoe & Tyler McNabb, eds., Debating Christian Religious Epistemology
 
The Stanford Encyclopedia of Philosophy has many helpful articles on topics in epistemology, but start with these:
Kelly James Clark’s article “Religious Epistemology” in the Internet Encyclopedia of Philosophy provides a good overview of the contemporary landscape (along with a helpful bibliography).
On Reformed presuppositional/Van Tilian/Framean epistemology, I recommend the following for starters:
- Cornelius Van Til, The Defense of the Faith (4th ed., esp. chapters 1-3)
 - Cornelius Van Til, An Introduction to Systematic Theology (2nd ed.)
 - Cornelius Van Til, A Christian Theory of Knowledge (2023 reprint edition)
 - John M. Frame, The Doctrine of the Knowledge of God
 - John M. Frame, Cornelius Van Til: An Analysis of His Thought (esp. chapters 4-17)
 - Greg L. Bahnsen, Van Til’s Apologetic: Readings and Analysis (esp. chapters 4-6)
 - Richard B. Gaffin, Jr., “Some Epistemological Reflections on 1 Cor 2:6-16”
 - K. Scott Oliphint, “Epistemology and Christian Belief”
 - James D. Baird, “Analogical Knowledge: A Systematic Interpretation of Cornelius Van Til’s Theological Epistemology”